Portland, Middlesex County, Connecticut, USAi
| Regional Level Types | |
|---|---|
| Portland | Town |
| Middlesex County | County |
| Connecticut | State |
| USA | Country |
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Portland is a town. Known as "Quarrytown" primarily for the large "brownstone" quarries (aeolian arkosic sandstone of the Portland Formation) near the Connecticut River in the western part town, Portland is also host to the most famous pegmatite quarry in the area - the Strickland Quarry.
European settlers arrived in the 1690s, attracted to the blocks of brownstone along the riverbank. Originally Portland was part of Middletown and was known as East Middletown. In 1767 it became the separate town of Chatham. In 1841, when it separated from the eastern part of Chatham, it changed its name first to Conway then to Portland (because of the fame of quarries in that English town) (The remainder of Chatham changed its name to East Hampton in 1915.)
The bedrock geology is split between continental sedimentary rocks in the west, part of the Mesozoic Hartford Basin of the Newark Supergroup and mostly metaplutonic, metavolcanic and metasedimentary metamorphic rocks of the Ordovician Bronson Hill terrane in the east. These terranes are separated by the Eastern Border Fault of the Hartford Basin. Much of the Bronson Hill terrane rocks in town are mixed schists, calc-silicate rocks, and minor quartzites of the Collins Hill Formation, and its metavolcanic member, which are present just east of the Eastern Border Fault. Farther east the bedrock is mostly metaplutonic Glastonbury Gneiss, which crops out as far south as Great Hill Pond. A thin sliver of Devonian Maromas Granite Gneiss is also present.
Portland lies within the Middletown Pegmatite District, and a swarm of Permian pegmatite dikes lies just east of the Eastern Border Fault, mostly within the Collins Hill Formation, but some further east in the Glastonbury Gneiss. These were heavily quarried from the north at the Glastonbury town line and just east of State Route 17 (particularly the long-lived Hale Quarry) southward onto Collins Hill, which hosted the famous Strickland Quarry and Cramer Mine, where most of Portland's diverse mineralogy originates. Most pegmatite specimens just labeled "Portland" are likely from there, although the small Walden Gem Mine and Case Quarries produced many specimens also. Sharply formed and deeply colored aquamarines hail from the small Pelton's Quarry. Unquarried pegmatites can still be easily seen along State Route 66 in the Riverdale section just north of the Connecticut River in the area known as "The Ledges".
European settlers arrived in the 1690s, attracted to the blocks of brownstone along the riverbank. Originally Portland was part of Middletown and was known as East Middletown. In 1767 it became the separate town of Chatham. In 1841, when it separated from the eastern part of Chatham, it changed its name first to Conway then to Portland (because of the fame of quarries in that English town) (The remainder of Chatham changed its name to East Hampton in 1915.)
The bedrock geology is split between continental sedimentary rocks in the west, part of the Mesozoic Hartford Basin of the Newark Supergroup and mostly metaplutonic, metavolcanic and metasedimentary metamorphic rocks of the Ordovician Bronson Hill terrane in the east. These terranes are separated by the Eastern Border Fault of the Hartford Basin. Much of the Bronson Hill terrane rocks in town are mixed schists, calc-silicate rocks, and minor quartzites of the Collins Hill Formation, and its metavolcanic member, which are present just east of the Eastern Border Fault. Farther east the bedrock is mostly metaplutonic Glastonbury Gneiss, which crops out as far south as Great Hill Pond. A thin sliver of Devonian Maromas Granite Gneiss is also present.
Portland lies within the Middletown Pegmatite District, and a swarm of Permian pegmatite dikes lies just east of the Eastern Border Fault, mostly within the Collins Hill Formation, but some further east in the Glastonbury Gneiss. These were heavily quarried from the north at the Glastonbury town line and just east of State Route 17 (particularly the long-lived Hale Quarry) southward onto Collins Hill, which hosted the famous Strickland Quarry and Cramer Mine, where most of Portland's diverse mineralogy originates. Most pegmatite specimens just labeled "Portland" are likely from there, although the small Walden Gem Mine and Case Quarries produced many specimens also. Sharply formed and deeply colored aquamarines hail from the small Pelton's Quarry. Unquarried pegmatites can still be easily seen along State Route 66 in the Riverdale section just north of the Connecticut River in the area known as "The Ledges".
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Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded from this region.Mineral List
Mineral list contains entries from the region specified including sub-localities138 valid minerals. 13 erroneous literature entries.
Rock Types Recorded
Rock list contains entries from the region specified including sub-localities
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Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Actinolite Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 Localities: |
| ⓘ Albite Formula: Na(AlSi3O8) Localities: Reported from at least 22 localities in this region. Habit: primary crystals blocky, complex, striated. Secondary ones tabular, rhombic, as druses or overgrowths Colour: white, tan Description: Mostly a rock-forming mineral, as coarse, white grains in the outer zones of the pegmatite. But also as a very late crystallizing K-rich variety (described by Jenks 1935), very fine-grained and tan colored with cleavelandite in the inner mineralized zone. The K-rich variety forms tiny, tabular, rhombic crystals or saw-toothed overgrowths on cleavelandite in numerous small pockets in this zone. |
| ⓘ Albite var. Cleavelandite Formula: Na(AlSi3O8) Localities: Habit: tabular Colour: white to pale blue or green Description: Coarse tabular aggregates, commonly with terminations in interstitial spaces, forms much of the matrix of the up to 45-foot-thick plagioclase-quartz intermediate zone that hosts much of the interesting mineralization such as morganite, elbaite, spodumene, lepidolite, montebrasite, K-rich albite, cookeite, columbite, tantalite, wodginite, quartz crystals, etc. |
| ⓘ Albite var. Oligoclase Formula: (Na,Ca)[Al(Si,Al)Si2O8] Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: anhedral grains to parallel-growth Colour: white Description: The typical albite variety in host metamorphic rocks, best crystals are parallel growth habit in Alpine-cleft type openings within the host Collins Hill Formation schist unit, with cubic pyrite, chlorite and tiny anatase crystals. |
| ⓘ Albite var. Peristerite Formula: Na(AlSi3O8) |
| ⓘ Allanite-(Ce) Formula: (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH) Localities: Walden Gem Quarry, Portland, Middlesex County, Connecticut, USA Andrews Quarry (old Hale Quarry; Grandfather Andrews Quarry), Portland, Middlesex County, Connecticut, USA ? (more information) Habit: subhedral tabular Colour: black Description: Aggregates of subhedral crystals to 1.5 cm. SEM-EDS analysis found no thorium in the sample. |
| ⓘ 'Allanite Group' Formula: (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) Description: Reference contains a list with no details. |
| ⓘ Almandine Formula: Fe2+3Al2(SiO4)3 Localities: Reported from at least 13 localities in this region. Habit: trapezohedral, granular Colour: maroon to red-brown Description: As generally small crystals in the outer zones of the pegmatite, but also massive concentrations mixed with fluorapatite, zinnwaldite/masutomilite, elbaite and columbite-(Fe) in cleavelandite. Gemmy crystals in this assemblage confirmed using Raman spectroscopy typically partially replaced by waxy yellow fine-grained muscovite (also confirmed by Raman).
Also, in the host metamorphic rocks as a component of "coticule" rock. This rock is described by Lundgren (1979) (the bedrock quadrangle report for Haddam - QR37) as a "bedded garnet-quartz rock (coticule) that consists of thin layers (millimeter-to-centimeter thick) of fine-grained spessartine-quartz granofels. Plagioclase, biotite [annite], and hornblende are present in some layers, but the rocks are essentially aggregates of very small (less than 0.05-0.1 mm) garnet crystals and quartz." Though coticule from around New England has been described as containing spessartine, the particular garnet species here was recently confirmed as almandine using Raman spectroscopy by Paul Bartholomew at U. New Haven.
Schooner describes coticule as "a granular pink spessartine rock...can be found in many parts of the area, as in the vicinity of the Strickland quarry. Veins are usually thin and sinuous, but may reach a thickness of several inches. Such material is attractive in large polished slabs." |
| ⓘ Formula: LiAl(PO4)F Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA - erroneously reported Description: Re-identified as montebrasite. |
| ✪ Analcime Formula: Na(AlSi2O6) · H2O Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: trapezohedra Colour: white Description: Very late crystallizing with fluorite and siderite in pockets of K-rich albite and cleavelandite of the inner mineralized zone. References: |
| ⓘ Anatase Formula: TiO2 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: crude to perfect elongated bipyramidal Colour: metallic to honey-brown Description: Tiny micro-crystals <1 mm crudely to perfectly crystalline and appear metallic on the crystal surfaces, broken ones reveal honey-brown, resinous interior. Associated with cubic pyrite and chlorite crystals in spaces between vuggy albite in host schist Alpine-type openings.
Schooner (circa 1985) reports: "A micromount of anatase and rutile crystals, associated with adularia, was once collected at the Strickland quarry. Narrow alpine-type veins are encountered in the schist adjoining the pegmatite." |
| ⓘ Anglesite ? Formula: PbSO4 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: coating Colour: gray Description: Schooner (1955): a thin grayish coating on galena which had been exposed to much weathering on the oldest of the Strickland Quarry dumps. The matrix, in his one good specimen, is a mixture of secondary albite and gray lepidolite. |
| ⓘ Annite Formula: KFe2+3(AlSi3O10)(OH)2 Localities: Reported from at least 11 localities in this region. |
| ⓘ Anorthite Formula: Ca(Al2Si2O8) Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: massive granular Colour: yellowish Description: According to Schooner (circa 1985): "Yellowish anorthite is rather common in the calc-silicate assembly [in the host Collins Hill Formation]". |
| ⓘ Aragonite Formula: CaCO3 |
| ⓘ Arsenolite ? Formula: As2O3 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: powder Colour: yellowish Description: Schooner (1955): "as yellowish powdery incrustations on decomposed arsenopyrite at the Strickland Quarry. One rather large mass of the unusual material was taken out of the pegmatite which adjoins the schist in the cut above the main pit. Pyrite is associated, in all the specimens." |
| ⓘ Arsenopyrite Formula: FeAsS Localities: |
| ⓘ Augelite Formula: Al2(PO4)(OH)3 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Colour: gray Description: Specimens of metasomatically altered natromontebrasite, collected at the Strickland quarry around 1950 by Charles Thomas, consist of gray augelite crystals intergrown with pink brazilianite, pink hydroxylapatite, and yellow lacroixite. Very little such material was preserved, and most of it was consumed in study at the U.S. Geological Survey. Natromontebrasite was discredited in 2007, being a mixture of montebrasite, lacroixite, and wardite. |
| ⓘ Augite Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: massive granular Colour: brown Description: "A striking brown clinopyroxene, with a silky luster, collected at the Strickland quarry, gives an X-ray pattern closer to fassaite than diopside or augite. As learned from similar material, at the railroad cut two miles west, the surficial alteration is a smectite, corroborating the aluminum content. Fassaite also accompanies zoisite, quite abundantly, at ledges immediately west of the Strickland quarry." Schooner (circa 1985). |
| ⓘ Augite var. Fassaite Formula: (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: massive granular Colour: brown Description: "A striking brown clinopyroxene, with a silky luster, collected at the Strickland quarry, gives an X-ray pattern closer to fassaite than diopside or augite. As learned from similar material, at the railroad cut two miles west, the surficial alteration is a smectite, corroborating the aluminum content. Fassaite also accompanies zoisite, quite abundantly, at ledges immediately west of the Strickland quarry." Schooner (circa 1985). |
| ⓘ Autunite Formula: Ca(UO2)2(PO4)2 · 10-12H2O Localities: Reported from at least 6 localities in this region. |
| ⓘ Bavenite Formula: Ca4Be2Al2Si9O26(OH)2 |
| ⓘ Bazzite Formula: Be3Sc2(Si6O18) |
| ⓘ Bertrandite Formula: Be4(Si2O7)(OH)2 Localities: Habit: tabular or as v-twins Colour: colorless to pale green Description: Clear, glassy, micro-crystals in pockets with secondary albite. Groups of distinct crystals and reticulated platy aggregates up to several inches in diameter have been collected. |
| ⓘ Beryl Formula: Be3Al2(Si6O18) Localities: Reported from at least 19 localities in this region. Habit: hexagonal prisms Colour: green to bluish-green |
| ⓘ Beryl var. Aquamarine Localities: Reported from at least 7 localities in this region. Habit: elongated hexagonal prisms with pinacoids Colour: blue Description: Typically rough masses or subhedral to euhedral hexagonal crystals in matrix. Gem material was common. |
| ⓘ Beryl var. Goshenite Formula: Be3Al2(Si6O18) Colour: white Description: In the mineralized core zone. References: |
| ⓘ Beryl var. Heliodor Formula: Be3Al2(Si6O18) Localities: Pegmatite prospects, Collins Hill, Portland, Middlesex County, Connecticut, USA Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Schoonmaker Mine, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Case Quarries, Portland, Middlesex County, Connecticut, USA Walden Gem Quarry, Portland, Middlesex County, Connecticut, USA |
| ⓘ Beryl var. Morganite Formula: Be3Al2(Si6O18) Localities: Habit: anhedral to subhedral tabular hexagonal Colour: pink to rosy Description: Usually anhedral to subhedral filling spaces in cleavelandite. Some gems have been cut. The Peabody Museum of Yale University exhibits a superb, gemmy, rose beryl crystal, six or eight inches across and no more than two inches thick. Sterrett (1923) describes another morganite on display at Wesleyan: "in one pocket an irregularly shaped fragment of transparent pale salmon-pink beryl was found. It is 2 1/2 inches long and 1 inch thick, with an exceedingly rough honeycombed and drusy surface. It is evidently the remnant of a much larger crystal, most of which has been dissolved, leaving only a part with a rough etched surface." |
| ⓘ Bismite Formula: Bi2O3 Localities: Habit: coatings Colour: straw yellow Description: Associated with other bismuth minerals, as coatings on feldspar and quartz, an alteration product of bismutite. |
| ⓘ Bismuthinite Formula: Bi2S3 Localities: Reported from at least 7 localities in this region. Habit: prismatic, platy masses Colour: metallic gray Description: Huff et al (1996): Bismuthinite “occurs intimately associated with minor pyrite in small veins in the pegmatite and in the quartz vein – thus providing the necessary elements for alteration into bright green bismutoferrite. This is the first confirmation of bismutoferrite in Connecticut.”
As platy masses to striated crystals typically with green and yellow secondaries, in rust-stained pegmatite due to oxidation of associated pyrite. |
| ⓘ Bismutite Formula: (BiO)2CO3 Localities: Reported from at least 8 localities in this region. Habit: coatings Colour: straw yellow Description: yellow coatings on bismuthinite associated with bismutoferrite. |
| ⓘ Bismutoferrite Formula: Fe3+2Bi(SiO4)2(OH) Localities: Habit: coatings Colour: bright green Description: Associated with bismuthiniite and pyrite, which weathered to form this mineral and associated rusty stains and goethite in proximal matrix. |
| ⓘ Bityite Formula: CaLiAl2(AlBeSi2O10)(OH)2 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: hexagonal Colour: white Description: Schooner (circa 1985) says: "When the Strickland quarry was last active, the author found a boulder of cleavelandite with a small vug of aggregated lustrous white hexagonal-looking crystals with calcite and a trace of lepidolite. It was many years before the mineral was recognized as being a mica! Its unusual X-ray pattern aroused some curiosity, and it was forwarded to Pete J. Dunn at the Smithsonian. He identified it as bityite, and made an analysis by electron microprobe." |
| ⓘ Brazilianite Formula: NaAl3(PO4)2(OH)4 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Colour: pink Description: Schooner (circa 1985) says: "A few masses of Strickland quarry natromontebrasite, from the pollucite zone in the middle eastern wall, halfway down, are composed of intergrown metasomatic or hydrothermal alterations. Pink brazilianite, containing a trace of Mn (analysis by the USGS), is associated with augelite, lacroixite, and hydroxylapatite. This mineral was collected by Charles Thomas, and studied by Mary E. Mrose. Ronald E. Januzzi had earlier collected material, on the old dumps, in which the brazilianite occurs as confused white aggregates, with hydroxylapatite and possibly morinite." Natromontebrasite was discredited in 2007, being a mixture of montebrasite, lacroixite, and wardite. |
| ⓘ Calcite Formula: CaCO3 Localities: Schoonmaker Mine, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Carr Brook Waterfall, Collins Hill, Portland, Middlesex County, Connecticut, USA Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Portland, Middlesex County, Connecticut, USA |
| ⓘ Cassiterite Formula: SnO2 |
| ⓘ Chalcopyrite Formula: CuFeS2 Localities: Hale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex County, Connecticut, USA Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: massive Description: intergrown with pyrrhotite, pyrite and dark smoky quartz |
| ⓘ 'Chlorite Group' |
| ⓘ Formula: Mg3(Si2O5)(OH)4 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA - erroneously reported Description: Thoroughly unreasonable guess. |
| ⓘ Clinozoisite Formula: (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Description: In the host metamorphic rocks. |
| ⓘ Columbite-(Fe) Formula: Fe2+Nb2O6 Localities: Reported from at least 10 localities in this region. Habit: tabular to elongated prisms Colour: black with iridescence Description: Found in all the pegmatites usually to a couple of cm, the crystals typically subhedral when in matrix, euhedral crystals from pockets very rare but can reach 3 cm. |
| ⓘ 'Columbite-(Fe)-Columbite-(Mn) Series' |
| ⓘ Columbite-(Mn) Formula: Mn2+Nb2O6 References: Vandall Thomas King CollectionIdentified by Vandall Thomas King: Dealer/Collection Label |
| ✪ 'Columbite-(Mn)-Tantalite-(Mn) Series' Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: rectangular prisms Colour: dark reddish to reddish brown Description: Columbite-tantalite crystals with reddish color and some translucency have been historically called tantalite-(Mn) without supporting analyses (even SG) but visually could equally be columbite-(Mn). Strong illumination is typically needed to see the color and translucency. Most are small (<1 cm) and embedded in matrix. References: |
| ⓘ 'Columbite-Tantalite' |
| ✪ Cookeite Formula: (LiAl4◻)[AlSi3O10](OH)8 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: micro-globular aggregates, masses, pseudomorphs after spodumene Colour: pale yellow Description: Typically as tiny spheres of crystal aggregates with K-rich albite, micas, elbaite, quartz, calcite, pyrite, fluorite, and bertrandite in cleavelandite of the mineralized intermediate plagioclase-quartz zone. Rare pseudomorphs of spodumene. Schooner (1955) says: "solid masses of bright yellow fine-grained material. Some pieces were seen to be as much as 4 or 5 inches thick, the mineral having occurred as a lining in a long cavity or series of cavities." |
| ⓘ Cordierite Formula: Mg2Al4Si5O18 Localities: Case Quarry No. 1, Case Quarries, Portland, Middlesex County, Connecticut, USA Case Quarries, Portland, Middlesex County, Connecticut, USA Schoonmaker Mine, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: elongated prisms Colour: dark purple to gray (altered to gray-green on surface) Description: Crystals to a few cm long found in a coarse-grained phase (albite, quartz, cordierite, annite) of the Glastonbury Gneiss surrounding the pegmatites. Found in the dump for this quarry. |
| ⓘ Crandallite ? Formula: CaAl3(PO4)(PO3OH)(OH)6 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Description: Schooner (1955) reports it "as microscopic crystals associated with bertrandite" found by Gunnar Bjareby. However, he does not mention it in any of his subsequent writings on the area. |
| ⓘ Cuprobismutite Formula: Cu8AgBi13S24 Localities: Habit: prismatic Colour: gray-bluish-black metallic Description: Vajdak (1997): Cuprobismutite from Case Quarry, Portland, Middlesex County, Connecticut was found on several specimens self-collected by Russell C. Huff (Woodbury, CT) in 1995. The mineral occurs as prismatic crystals and blades a few mm long which is quite large for this rare mineral and is gray-bluish-black metallic. A very rare occurrence in pegmatite and a new mineral for Connecticut. It is associated with bismutoferrite which we have analyzed as a new mineral from there in 1995 and with yellow-green bismutite. |
| ⓘ Dickinsonite-(KMnNa) Formula: (KNa)(Mn2+◻)Ca(Na2Na)Mn2+13Al(PO4)11(PO4)(OH)2 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: flakes, coating on altered lithiophilite Colour: olive green Description: Schooner (1955): "Little scales of the rare phosphate are seen on a few specimens." |
| ⓘ Diopside Formula: CaMgSi2O6 Localities: Description: Likely from calc-silicate rock units in the Collins Hill Formation hosting the pegmatite. |
| ⓘ Elbaite Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) Localities: Habit: elongated prisms Colour: olive to grass green; blue-green; bright pink; pastel green, pink (watermelon), blue and gray to colorless Fluorescence: blue Description: Mostly subhedral, shattered crystals in matrix but several crystal-rich pockets are described in the literature. Crystals common in late-stage vuggy cleavelandite with tan, high-K albite, quartz, pyrite, mica, cookeite, micas, etc. Most crystals grass green throughout, usually poorly terminated in cookeite or albite, may show pedion or shallow rhomb or grade into parallel asbestiform crystals. Crystals generally concentrically rather than longitudinally color zoned. Green and blue-green overgrowths (these may be foitite) on schorl common or concentrically zoned with very dark blue-green core, grass green intermediate zone and olive green outer zone. Smaller crystals can be pure bright pink, these are commonly etched. Pastel colored crystals can be watermelon zoned (some pink cores fluoresce blue) or almost blue-gray and lavender-gray to colorless. A blue-gray alteration is common in fractures through the lavender crystals. |
| ⓘ Eosphorite Formula: Mn2+Al(PO4)(OH)2 · H2O Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Description: Rarely occurs with rhodochrosite and other secondary alterations of lithiophilite nodules. |
| ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) Localities: Reported from at least 6 localities in this region. Habit: elongated to short prisms Colour: dark green Description: In quartz veins in the metamorphics surrounding the pegmatites. |
| ⓘ Epsomite Formula: MgSO4 · 7H2O Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: efflorescence Description: Schooner (1958): "occurs very sparingly with pickeringite, in efflorescences on protected schist ledges in the cut above the Strickland Quarry. It is distinguished from pickeringite by its different taste… the same as that of artificial Epsom salt." References: |
| ⓘ Euclase ? Formula: BeAl(SiO4)(OH) Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Colour: colorless Description: Etched, elongated microcrystals with rhombic cross-section and wedge-shaped terminations. With secondary quartz and cookeite coating a pocket quartz. References: |
| ⓘ Formula: LiAlSiO4 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA - erroneously reported Description: Speculation by Schooner. References: |
| ⓘ Formula: (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA - erroneously reported Description: Reference by Januzzi (1976) to this mineral being found by Schooner in "Portland" correlates only with a report by Schooner (circa 1985) from the Hale Quarry in Portland. Schooner makes no mention if it from Strickland in his various comprehensive publications, especially his last, Schooner (circa 1985). |
| ⓘ Fairfieldite Formula: Ca2Mn2+(PO4)2 · 2H2O Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: radiating Colour: white Description: radiating fans of micro crystals in altered lithiophilite, with hureaulite, hydroxylapatite. |
| ⓘ 'Feldspar Group' Habit: anhedral to subhedral blocky Colour: white, tan, pale pink Description: aka - microcline. A major rock-forming component of the pegmatites, the largest and best crystals terminate in the quartz cores and can reach over 20 cm. |
| ⓘ Ferrimolybdite Formula: Fe2(MoO4)3 · nH2O Localities: Colour: yellowish Description: alteration of molybdenite (Schooner 1958) |
| ⓘ Fluorapatite Formula: Ca5(PO4)3F Localities: Reported from at least 13 localities in this region. Habit: tabular to short hexagonal prisms Colour: white, pink, green, blue, lavender Fluorescence: bright yellow Description: Primary crystallization as typically massive and skeletal segregations mixed with almandine, dark brown mica, and columbite-(Fe) in a cleavelandite matrix. Tons of it were removed during the activity in 1953. But more interesting as a secondary crystallization characterized by clear, white, lavender to pale blue, tabular to short, euhedral micro-crystals (mostly <<1") in pockets with K-rich albite, elbaite, fluorite, pyrite, calcite, micas, etc. |
| ⓘ Fluorapatite var. Manganese-bearing Fluorapatite Formula: (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH) Localities: Habit: anhedral to stubby subhedral hexagons Colour: grayish green to blue-green, white, pale blue Fluorescence: yellow Description: An old term that should be abandoned, see description under fluorapatite. |
| ⓘ Fluorite Formula: CaF2 Localities: Colour: purple Description: found in two forms; as dark purple cleavage pieces, and as nodules that were covered with a grey film, but that fluoresced a beautiful lavender blue. The cleavage pieces were not fluorescent. With pyrite. |
| ⓘ Foitite Formula: ◻(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3(OH) Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Description: Grading into elbaite, associated with wodginite, cassiterite, quartz and gobbinsite. |
| ⓘ Gahnite Formula: ZnAl2O4 Localities: Habit: octahedral Colour: very dark green Description: Grains to crystals to 11 mm. |
| ⓘ Galena Formula: PbS Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: cleavable masses Description: Schooner (1955) says: "often been found at the Strickland Quarry by the author. His specimens are mostly of small size, but they show galena in close association with lepidolite, lithiophilite, spodumene, amblygonite albite, manganotantalite, green tourmaline, and yellow sphalerite". In Schooner (circa 1985) he further elaborates: "At the Strickland quarry, little cleavages of galena have often been collected, intimately associated with feldspar or calcite; also in the whole range of lithium minerals, elbaite, spodumene, montebraesite, petalite, and lepidolite; additionally, in the cesium zeolite, pollucite. The largest mass is about an inch in diameter. Occasionally, there are intergrowths of galena with brown sphalerite. In the pollucite zone, a narrow, irregular seam was filled with galena, yielding the odd combinations already cited." |
| ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 |
| ⓘ Gehlenite Formula: Ca2Al[AlSiO7] Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: tetragonal prisms Colour: light brown Description: Tiny crystals in lens-like bodies of calc-silicate rock in the host Collins Hill Formation. Optical and X-ray study by Waldemar T. Schaller at the USGS indicate gehlenite, associated with diopside, grossular, wollastonite, and spurrite. |
| ⓘ Gobbinsite Formula: Na5(Si11Al5)O32 · 11H2O Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Description: Asociated with foitite grading into elbaite, wodginite, cassiterite, and quartz. |
| ⓘ Goethite Formula: Fe3+O(OH) Localities: Case Quarry No. 1, Case Quarries, Portland, Middlesex County, Connecticut, USA Case Quarries, Portland, Middlesex County, Connecticut, USA Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Case Quarry No. 3, Case Quarries, Portland, Middlesex County, Connecticut, USA Habit: massive, earthy, coatings Colour: brown Description: From the oxidation of pyrite associated with bismuth minerals. |
| ⓘ Goslarite ? Formula: ZnSO4 · 7H2O Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: efflorescence Colour: white Description: "A thin coating of white goslarite, with a characteristic sharp taste, was found on the protected bottom of a pegmatite boulder, containing sphalerite and pyrite, on a Strickland quarry dump. Such material is, of course, ephemeral, because of its hydrosoluble nature." (Schooner, circa 1985). |
| ⓘ Graphite Formula: C Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: anhedral Description: Minor component of the host metamorphic rocks. References: |
| ⓘ Greenockite ? Formula: CdS Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: encrustation Colour: yellow Description: Schooner (1955) says it: "was discovered at Collins Hill by the author, about ten years ago. Little was seen, and only one example was collected. The mineral consisted of bright yellow coatings on sphalerite, from the cut above the Strickland Quarry". There is so much else this could be.... |
| ⓘ Grossular Formula: Ca3Al2(SiO4)3 Localities: Schoonmaker Mine, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Carr Brook Waterfall, Collins Hill, Portland, Middlesex County, Connecticut, USA Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Portland, Middlesex County, Connecticut, USA |
| ⓘ Groutite Formula: Mn3+O(OH) Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: massive crust Colour: black Description: Thick black crust on altered lithiophilite with hureaulite and hydroxylapatite. |
| ⓘ 'Gummite' Locality: Schoonmaker Mine, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Colour: reddish-orange Description: Associated with crystallized uraninite. |
| ⓘ Gypsum Formula: CaSO4 · 2H2O |
| ⓘ Halloysite Formula: Al2Si2O5(OH)4 · n(H2O) Localities: Habit: earthy to waxy masses Colour: tan Description: Alteration of pollucite, so occurs as thin crusts and veins with elbaite, pollucite, cleavelandite. |
| ⓘ Hematite Formula: Fe2O3 Localities: Habit: encrustation Colour: red Description: Schooner (1955) reports it "as rouge-like coatings on mica schist, is abundant in the cut which is located above the main part of the Strickland Quarry". |
| ⓘ Heterosite Formula: Fe3+(PO4) Localities: Colour: purple Description: secondary after triphylite (Foye 1922) |
| ⓘ Hexahydrite ? Formula: Mg(H2O)6(SO4) Description: Discovered by Richard Schooner as an "efflorescence on schist" at an undisclosed Portland location, reported by Januzzi, but details lacking. |
| ⓘ 'Hornblende Root Name Group' Formula: ◻Ca2(C2+4C3+)(AlSi7O22)W2 |
| ⓘ Hureaulite Formula: Mn2+5(PO3OH)2(PO4)2 · 4H2O Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: massive, etched Colour: red-brown, orange-red to pink Description: massive, earthy to vitreous, translucent, etched, cellular alteration of lithiophilite, with white hydroxylapatite and sicklerite. Confirmed again in 2014 using Raman spectroscopy, by Paul Bartholomew, U. New Haven. |
| ⓘ Hydroxylapatite Formula: Ca5(PO4)3(OH) Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: pearly opalescent crust or stubby, rounded hexagons Colour: white Description: As white overgrowth on purple fluorapatite as a late crystallization hosted by K-rich albite and as a massive to micro chalky-white crystals and opalescent rind around altered lithiophilite with hureaulite and groutite. Schooner (circa 1985) calls the latter opaline or chalcedonic variety francolite (under the heading for carbonate fluorapatite).
Specimens of metasomatically altered montebrasite, collected at the Strickland quarry around 1950 by Charles Thomas, consist of gray augelite crystals intergrown with pink brazilianite, pink hydroxylapatite, and yellow lacroixite. |
| ⓘ Hydroxylherderite Formula: CaBe(PO4)(OH) Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: microscopic chisel-shaped Colour: colorless Description: Very fine grained granular alteration of beryl (with moraesite) with tiny, chisel-like clear crystals in tiny voids. References: |
| ⓘ Ilmenite Formula: Fe2+TiO3 |
| ✪ Ishikawaite Formula: U4+Fe2+Nb2O8 Habit: tabular Colour: black with brown coating Description: metamict crystals with obsidian-like conchoidal fracture |
| ⓘ Kaolinite Formula: Al2(Si2O5)(OH)4 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Colour: white Description: chalky masses, in association with calcite and pyrite |
| ⓘ 'K Feldspar' Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA References: |
| ⓘ 'K Feldspar var. Adularia' Formula: KAlSi3O8 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Colour: creamy Description: Microcrystals in voids in amphibolite with tremolite. References: |
| ⓘ Kyanite Formula: Al2(SiO4)O Localities: Habit: elongated blades Colour: blue Description: Found in metamorphic host rock, especially above a small rock quarry on the west side of the hill to the right of the road which ascends Collins Hill. Crystals to a few inches. |
| ⓘ Lacroixite Formula: NaAl(PO4)F Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: granular Colour: pale yellow Description: From Schooner (circa 1985): "Mary E. Mrose [USGS] studied some exceptional material collected at the Strickland quarry by Charles Thomas, when the last sporadic work was done in the non-flooded pit. Lacroixite formed rather granular pale yellow areas in a mixture of augelite, brazilianite, and hydroxylapatite (?), replacing natromontebrasite. Her paper redefined the species, which had been in question." Natromontebrasite was discredited in 2007, being a mixture of montebrasite, lacroixite, and wardite. |
| ⓘ Larnite Formula: Ca2SiO4 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Colour: grayish Description: Schooner (circa 1985): "One of the calc-silicate pods at the Strickland quarry contained the usual fine-grained diopside, grossularite, and wollastonite, with the addition of a 1/2 inch zone of grayish cleavable larnite, giving a distinct X-ray pattern." Studied by Waldemar T. Schaller of USGS. |
| ⓘ 'Lepidolite' Localities: Habit: tapered columnar and granular Colour: purple Description: fine crystals tapering from a point at one end to a larger, curved, somewhat hemispherical crystallization at the other end of the crystal. It appears to have grown in wedge shaped areas between interlocking crystal plates of cleavelandite. Some of the hemispherical terminations may be as much as two or three inches across at the large end. They are noted in cross section to be made up of many curved crystalline plates of lepidolite all curved over each other, so that in pealing off layers of this mica, they would all appear with hemispherically curved surfaces. |
| ⓘ Liandratite Formula: U(Nb,Ta)2O8 |
| ⓘ 'Limonite' Localities: Pelton's Quarry, Portland, Middlesex County, Connecticut, USA Andrews Quarry (old Hale Quarry; Grandfather Andrews Quarry), Portland, Middlesex County, Connecticut, USA Hale-Walker prospects, Collins Hill, Portland, Middlesex County, Connecticut, USA Hale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex County, Connecticut, USA Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA |
| ⓘ Lithiophilite Formula: LiMn2+PO4 Localities: Colour: deep orange-red to reddish brown to light brown Description: with some spodumene and lepidolite; some very fine specimens of deep orange-red color in quartz |
| ⓘ Lithiophilite var. Sicklerite Formula: Li1-x(Mn3+xMn2+1-x)PO4 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: crusts Colour: brown Description: Thin brown crust on altered lithiophilite with hureaulite and hydroxylapatite. |
| ⓘ Löllingite Formula: FeAs2 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: tabular microcrystals Colour: iridescent Description: Some beautifully developed crystals have come from the Strickland Quarry, including small brilliant ones in granular lepidolite (Schooner, 1961). A few years ago, some tiny iridescent tabular crystals were noted in specimens of coarsely granular golden-brown zinnwaldite from the Strickland quarry. X-ray study indicates they are loellingite (Schooner. circa 1985). |
| ⓘ Magnesio-hornblende Formula: ◻Ca2(Mg4Al)(Si7Al)O22(OH)2 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: acicular masses Colour: dark green Description: Crystalline masses matching the description of "actinolite" by Schooner with grossular and rutile, part of a calc-silicate assemblage in the Collins Hill Formation hosting the pegmatite. Identified by TEM-EDS in 2016. References: |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 Localities: Hale-Walker prospects, Collins Hill, Portland, Middlesex County, Connecticut, USA Penfield Quarry (Oak Leaf Quarry), Portland, Middlesex County, Connecticut, USA Pelton's Quarry, Portland, Middlesex County, Connecticut, USA Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: octahedral Colour: black Description: The crystals are striated with triangular markings on the octahedron faces. The magnetite at Hale-Walker Quarry has a metallic luster on the crystal faces. The broken crystal portions are a very iridescent blue-black (Albini 1979) |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 Localities: Habit: massive Colour: bright green Description: coatings and massive concentrations associated with sphalerite |
| ⓘ 'Manganese Oxides' Localities: Case Quarry No. 2, Case Quarries, Portland, Middlesex County, Connecticut, USA Case Quarry No. 1, Case Quarries, Portland, Middlesex County, Connecticut, USA Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Case Quarries, Portland, Middlesex County, Connecticut, USA |
| ⓘ 'Manganese Oxides var. Manganese Dendrites' Localities: Case Quarry No. 2, Case Quarries, Portland, Middlesex County, Connecticut, USA Case Quarries, Portland, Middlesex County, Connecticut, USA Case Quarry No. 1, Case Quarries, Portland, Middlesex County, Connecticut, USA Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: dendritic coatings Colour: black to dark brown |
| ⓘ Formula: Mn3+O(OH) Localities: Description: No data. |
| ⓘ Masutomilite Formula: K(LiAlMn2+)[AlSi3O10]F2 |
| ⓘ Melanterite Formula: Fe2+(H2O)6(SO4) · H2O Localities: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Hale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex County, Connecticut, USA Habit: alteration crust on pyrite Colour: gray Description: Very fragile grayish crystals on decomposing pyrite and pyrrhotite. |
| ⓘ Meta-autunite Formula: Ca(UO2)2(PO4)2 · 6H2O Localities: Reported from at least 6 localities in this region. Habit: thin flakes Colour: pale yellow-green Fluorescence: green Description: used to be collected in genuine museum pieces |
| ⓘ Metatorbernite Formula: Cu(UO2)2(PO4)2 · 8H2O Localities: Hale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex County, Connecticut, USA Case Quarries, Portland, Middlesex County, Connecticut, USA Hale-Walker prospects, Collins Hill, Portland, Middlesex County, Connecticut, USA Case Quarry No. 3, Case Quarries, Portland, Middlesex County, Connecticut, USA Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA ? (more information) Habit: tabular Colour: emerald green Description: micaceous flakes are quite large, being about one-eighth inch across (Jones (1960))
magnificent specimens...was common, around l94l or 1942 (Schooner (1958)
sometimes covers the specimens so thickly as to give them a solid green appearance (Little 1942) |
| ⓘ Microcline Formula: K(AlSi3O8) Localities: Reported from at least 22 localities in this region. |
| ⓘ Microcline var. Amazonite Formula: K(AlSi3O8) Localities: Description: small crystals (Bastin 1910) |
| ⓘ 'Microlite Group' Formula: A2-mTa2X6-wZ1-n Localities: Hale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex County, Connecticut, USA Walden Gem Quarry, Portland, Middlesex County, Connecticut, USA Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Hale-Walker prospects, Collins Hill, Portland, Middlesex County, Connecticut, USA ? (more information) |
| ⓘ Mitridatite Formula: Ca2Fe3+3(PO4)3O2 · 3H2O Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: alteration Colour: yellow-green Description: Rare coating on altered lithiophilite. |
| ⓘ Molybdenite Formula: MoS2 Localities: Andrews Quarry (old Hale Quarry; Grandfather Andrews Quarry), Portland, Middlesex County, Connecticut, USA Hale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex County, Connecticut, USA Carr Brook Waterfall, Collins Hill, Portland, Middlesex County, Connecticut, USA Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA |
| ⓘ Monazite-(Ce) Formula: Ce(PO4) Localities: Andrews Quarry (old Hale Quarry; Grandfather Andrews Quarry), Portland, Middlesex County, Connecticut, USA Case Quarry No. 2, Case Quarries, Portland, Middlesex County, Connecticut, USA Case Quarries, Portland, Middlesex County, Connecticut, USA Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: roughly rectangular and flattened Colour: red-brown Description: Large, well formed monazite crystals (2 to 3 cm. in diameter) (Foye 1922)
up to 2 inches with brown staining (Schooner 1958) |
| ⓘ 'Monazite Group' Formula: REE(PO4) |
| ⓘ Montebrasite Formula: LiAl(PO4)(OH) Localities: Habit: typically anhedral Colour: white or pinkish, with brown rind Description: called amblygonite, but shown by others to be montebrasite |
| ⓘ Montmorillonite Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O Localities: Hale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex County, Connecticut, USA Walden Gem Quarry, Portland, Middlesex County, Connecticut, USA Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Colour: brownish Description: encrustations on pegmatite (Zodac 1941) |
| ⓘ Moraesite Formula: Be2(PO4)(OH) · 4H2O Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: Acicular, encrustations Colour: white Description: Merged sprays of acicular crystals forming a white crust on massive beryl, with hydroxylherderite. References: |
| ⓘ Morinite ? Formula: NaCa2Al2(PO4)2(OH)F4 · 2H2O Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Description: Unconfirmed. According to Schooner (circa 1985): "A few masses of Strickland quarry natromontebraesite, from the pollucite zone in the middle eastern wall, halfway down, are composed of intergrown metasomatic or hydrothermal alterations. Pink brazilianite, containing a trace of Mn (analysis by the USGS), is associated with augelite, lacroixite, and hydroxylapatite. This mineral was collected by Charles Thomas, and studied by Mary E. Mrose [USGS]. Ronald E. Januzzi had earlier collected material, on the old dumps, in which the brazilianite occurs as confused white aggregates, with hydroxylapatite and possibly morinite." |
| ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 Localities: Reported from at least 21 localities in this region. Habit: pseudohexagonal tabular to elongated crystals Colour: dark silver to bronze Description: Sharp, dark, well-formed crystals. |
| ⓘ Muscovite var. Schernikite Formula: KAl2(AlSi3O10)(OH)2 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: parallel-growth fibers with rhombic section Colour: lavender to pink Description: Typically as overgrowths on muscovite, or as micro-crystals in vugs with K-rich albite, cookeite, bertrandite, elbaite, etc. Similar to, but not as well developed, as the overgrowths found at the Gillette Quarry. References: |
| ⓘ Native Sulphur Formula: S8 Localities: Colour: bright to pale yellow Description: Small veins and equant, glassy microcrystals (pale yellow and rusty-stained) in voids. |
| ⓘ Formula: Na2Al2Si3O10 · 2H2O Locality: Hale-Walker prospects, Collins Hill, Portland, Middlesex County, Connecticut, USA - erroneously reported Description: Reference contains only a list with no details, and natrolite is questioned in the reference. Very unlikely. |
| ⓘ 'Natromontebrasite' Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Description: Schooner (circa 1985) reports: "A few years ago, John Gillespie did a spectrographic analysis on a sample submitted by the author, finding much Na and hardly any Li. It is quite possible that natromontebrasite was fairly common... A few masses of Strickland quarry natromontebrasite, from the pollucite zone in the middle eastern wall, halfway down, are composed of intergrown metasomatic or hydrothermal alterations. Pink brazilianite, containing a trace of Mn (analysis by the USGS), is associated with augelite, lacroixite, and hydroxylapatite. This mineral was collected by Charles Thomas, and studied by Mary E. Mrose [USGS]." This mineral was discredited in 2007 as a mixture of montebrasite, lacroixite and wardite. |
| ⓘ Natrophilite Formula: NaMn2+PO4 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: elongated subhedral grains Colour: light yellow Description: Subhedral, glassy, elongated grains embedded in lithiophilite. References: |
| ⓘ Opal Formula: SiO2 · nH2O Localities: Reported from at least 7 localities in this region. Description: Reference contains only a list with no details, but it is common in all pegmatites in the district. |
| ⓘ Opal var. Opal-AN Formula: SiO2 · nH2O Localities: Reported from at least 6 localities in this region. |
| ⓘ Formula: K(AlSi3O8) Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA - erroneously reported Description: Old references often refer to K-feldspar in pegmatites as orthoclase, but Stugard (1958) and Cameron et al (1954) show that it is microcline. |
| ⓘ Parsonsite Formula: Pb2(UO2)(PO4)2 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: alteration of uraninite Description: Schooner (circa 1985) reports: "A soft uraninite alteration, on a Wesleyan University sample from the Strickland quarry, gave the X-ray pattern of parsonsite. The available material was consumed in testing." |
| ⓘ Petalite Formula: LiAl(Si4O10) Localities: Habit: massive Colour: white with brown rind - overall tan appearance Description: massive, embedded in pollucite |
| ⓘ Petscheckite Formula: UFe(Nb,Ta)2O8 |
| ⓘ Phenakite Formula: Be2SiO4 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: striated, slightly etched elongated prisms Colour: colorless Description: Clear crystals to 3 mm in vug in cleavalandite with K-rich albite, bertrandite to 5 mm, quartz and goethite after pyrite. |
| ⓘ Phlogopite ? Formula: KMg3(AlSi3O10)(OH)2 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: micaceous Colour: dark brown Description: Schooner (1958) speculates that the brown mica in the calc-silicate units in the host Collins Hill Formation is dravite. In Schooner (circa 1985) he writes that "blocks of intergrown dravite and phlogopite have been collected; they came from the pegmatite near its contact with schist". In both cases, analytical data are lacking. References: |
| ⓘ Phosphuranylite Formula: KCa(H3O)3(UO2)7(PO4)4O4 · 8H2O References: Harold Moritz CollectionIdentified by Harold Moritz: Visual Identification |
| ⓘ Pickeringite Formula: MgAl2(SO4)4 · 22H2O |
| ⓘ 'Pinite' Localities: Habit: massive, fine-grained alteration of spodumene Colour: grayish shades of green, yellow, purple Description: Multi-colored alteration pseudomorphs after spodumene, with a soapy feel, like serpentine. Schooner (1958) elaborates: "During the active period at the locality, a bewildering array of 'pinite' specimens were encountered. They were of all colors and resembled jade, petrified wood, and other things. Many were perfect pseudomorphs after the original mineral." |
| ⓘ Formula: Al6(PO4)2(PO3OH)2(OH)8 · 4H2O Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA - erroneously reported Description: Schooner (circa 1985) writes that "A Boston Mineral Club list of Strickland quarry minerals, dating from about 1940, describes planerite as green crusts on fractured quartz. Several pieces of that material, resembling variscite, were collected at the time; unfortunately, none is now available for study." |
| ⓘ Pollucite Formula: (Cs,Na)2(Al2Si4O12) · 2H2O Localities: Colour: colorless Description: In the lithium mineral zone of the western pegmatite. Masses and cleavages to as much as a foot in length and six to eight inches in width have been recovered. It is closely associated with spodumene crystals, rubellite and other colored lithium tourmalines, caesium beryl, lepidolite, montebrasite, blue and white cleavelandite, and smoky quartz. It has a platy structure or it occurs as fractured masses, the fractures often being filled by dull white chalcedony. |
| ⓘ Purpurite Formula: Mn3+(PO4) Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: encrustation Colour: purple Description: Rare alteration of lithiophilite. Parent lithiophilite has Mn/Mn + Fe = 0.97 (Moore, 2000). |
| ⓘ Pyrite Formula: FeS2 Localities: Reported from at least 9 localities in this region. Habit: cuboctahedral to pyritohedral, cubic Colour: brassy Description: In the pegmatite, typically as small crystals typically <1/2-inch, commonly with a red hematite patina, in pockets with K-rich albite of the mineralized cleavalandite-quartz intermediate zone, associated with fluorite, calcite, micro-quartz, cookeite, bertrandite. Some altered to goethite. In Alpine-cleft type openings in the host schist of the Collins Hill Formation as aggregates of staggered cubes to 5mm on albite with chlorite and anatase. |
| ⓘ 'Pyrochlore Group' Formula: A2Nb2(O,OH)6Z |
| ⓘ 'Pyrochlore Group var. Uranpyrochlore (of Hogarth 1977)' Formula: (Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F) References: Harold Moritz CollectionIdentified by Harold Moritz: Visual Identification |
| ⓘ Formula: Mn4+O2 Localities: Description: No pyrolusite dendrite or staining in a granite pegmatite in the world has been verified as pyrolusite. The name was a mistake in the nineteenth century which has been widely publicized. |
| ⓘ Pyrrhotite Formula: Fe1-xS Localities: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Hale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex County, Connecticut, USA Habit: massive Colour: reddish metallic Description: Massive concentrations in quartz in the host Collins Hill Formation and as inclusions in diopside in calc-silicate units within. |
| ⓘ Quartz Formula: SiO2 Localities: Reported from at least 24 localities in this region. Habit: trigonal prisms Colour: colorless to pale grey, black, light brown, pink, yellow Description: Besides the ubiquitous massive material in all zones, large, distorted and rough pocket crystals, clear to smoky, sometimes gemmy, are known from the quartz-cleavelandite intermediate zone. These crystals are overgrowths on earlier fragmented quartz with "healed" faces and are commonly coated with albite, cookeite or fragments of matrix and included with white, acicular, hollow cavities of a former unknown mineral. Glassy micro-crystals associated with K-rich albite, cookeite, micas, bertrandite in secondary crystallizations. |
| ⓘ Quartz var. Amethyst Formula: SiO2 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: scepters Colour: purple Description: As scepter overgrowths on pocket milky quartz crystals. References: |
| ⓘ Quartz var. Chalcedony Formula: SiO2 Colour: white Fluorescence: pale yellow-white Description: filling fractures in pollucite masses. As "snowflake" inclusions in pollucite. |
| ⓘ Quartz var. Citrine Formula: SiO2 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Description: Schooner (1958): "Citrine, of fine gem quality, was formerly found at the Strickland Quarry, and a few stones were facetted from it... evidently the “topaz” which some people say was taken from there." |
| ⓘ Quartz var. Milky Quartz Formula: SiO2 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: elongated prismatic with rhombohedral terminations Colour: white Description: Smaller pocket crystals are often the milky variety. References: |
| ⓘ Quartz var. Rock Crystal Formula: SiO2 Localities: Habit: large distorted crystals and delicate elongated micro-crystals Colour: colorless Description: Large blocky, distorted crystals that are overgrowths on earlier fragmented quartz can be colorless, though they are typically smoky. In vugs with secondary minerals such as K-rich albite, bertrandite, micas, cookeite, etc., it occurs as delicate, glassy, doubly-terminated microcrystals sometimes in spindly aggregates. |
| ⓘ Quartz var. Rose Quartz Formula: SiO2 Localities: Andrews Quarry (old Hale Quarry; Grandfather Andrews Quarry), Portland, Middlesex County, Connecticut, USA Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA |
| ⓘ Quartz var. Smoky Quartz Formula: SiO2 Localities: Reported from at least 6 localities in this region. Habit: distorted prismatic crystals typically as overgrowths on earlier fragmented quartz Colour: gray to light brown, black Description: Magnificent clear and smoky crystals, up to at least a foot in length, and almost as broad came from many large pockets. These commonly distorted crystals are mostly overgrowths of earlier fragmented quartz and show complex "healed" faces and inclusions of fragmented bits of albite, and secondary minerals like cookeite, K-rich albite, fluorapatite and and an acicular mineral that later dissolved leaving voids filed by albite and/or cookeite. Much gem material was produced including black cairngorm. |
| ⓘ Reddingite ? Formula: (Mn2+,Fe2+)3(PO4)2 · 3H2O Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: micro-crystals Colour: dark red Description: Rare micro-crystals in altered lithiophilite may be this typical alteration product (Schooner, circa 1985). |
| ⓘ Rhodochrosite Formula: MnCO3 |
| ⓘ Formula: CaMn3Mn[Si5O15] Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA - erroneously reported Description: Turned out to be lithiophilite. |
| ⓘ Rutile Formula: TiO2 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: massive Colour: very dark red-brown Description: Massive grains in almandine coticule found in the host metamorphic rocks around the pegmatite. Micro grains as an accessory in these rock. Raman spectroscopy confirmation by Paul Bartholomew, U. New Haven. Also small crystalline masses scattered in magnesio-hornblende and grossular calc-silicate rock from the host Collins Hill Formation. |
| ⓘ Samarskite-(Y) Formula: YFe3+Nb2O8 Localities: Hale-Walker prospects, Collins Hill, Portland, Middlesex County, Connecticut, USA Case Quarries, Portland, Middlesex County, Connecticut, USA Pelton's Quarry, Portland, Middlesex County, Connecticut, USA Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA ? (more information) |
| ⓘ 'Scapolite' Localities: Appletree Lane, Portland, Middlesex County, Connecticut, USA Portland, Middlesex County, Connecticut, USA Schoonmaker Mine, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA ? (more information) Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA ? (more information) |
| ⓘ Scheelite Formula: Ca(WO4) Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: tiny grains Fluorescence: bright bue-white Description: Schooner says he found it as tiny fluorescing specks in granular orange-fluorescing "wollastonite" with very tough quartz in the schist which adjoined the pegmatite. |
| ⓘ Schorl Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) Localities: Reported from at least 15 localities in this region. Habit: elongated prisms Colour: black Description: Typically as large subhedral prisms in pegmatite matrix and as small scattered crystals in contacting schist. Can reach several inches in cross-section. Some concentrically overgrown by blue-green and olive-green elbaite. Schooner (1958) reports: "Enormous black crystals, occasionally well developed, were encountered in considerable profusion during the operation of the quarry in 1952 and 1953. They were embedded in cleavelandite, with manganapatite and spodumene; the point of origin in the pegmatite was a tunnel, perhaps two hundred feet below the surface." |
| ⓘ Scorodite ? Formula: Fe3+AsO4 · 2H2O Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: encrustation Colour: green Description: Schooner (1955) says "a small piece of badly weathered arsenopyrite had a bright green coating of the mineral". |
| ⓘ Siderite Formula: FeCO3 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: curved rhombohedra Colour: tan Description: Microscopic crystals with fluorite and analcime, SEM-EDS analysis shows some Mn impurity. This is consistent with Schooner's claim that rhodochrosite from altered lithiophilite grades into siderite. |
| ⓘ Sillimanite Formula: Al2(SiO4)O |
| ⓘ Spessartine Formula: Mn2+3Al2(SiO4)3 Localities: Reported from at least 6 localities in this region. |
| ⓘ Sphalerite Formula: ZnS Localities: Schoonmaker Mine, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Andrews Quarry (old Hale Quarry; Grandfather Andrews Quarry), Portland, Middlesex County, Connecticut, USA Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Colour: black |
| ⓘ Spodumene Formula: LiAlSi2O6 Localities: Habit: elongated prisms Colour: exterior tan to pale grey, interior white to lavender Fluorescence: lavender-pink in SW, orange-pink in LW Description: Tons of fragmented crystals were in the dumps, many well terminated. Most crystals etched on the exterior to a "woody" appearance, some crystals altered to pinite. The interior of good crystals is white to lavender and translucent with some rare gem material. Schooner (1958) says that "Rather large crystals, a yard long and a foot wide, were abundant when the locality was active. During the last period of operation, in l954, a great deal of the mineral was uncovered in the lower east wall of the main pit. Part of a wedge-shaped vein of lithium minerals was composed of virtually solid white spodumene. Green and lavender material was also present there, associated with pollucite, amblygonite, lepidolite, and cleavelandite. Most of the green and some of the pink has a good orange fluorescence and a vivid and long sustained orange phosphorescence under short-wave ultra-violet light. Cleavages are still found in the old dumps. Several fine specimens of translucent to semi-transparent light purple kunzite have been secured in recent years." |
| ⓘ Spodumene var. Kunzite Formula: LiAlSi2O6 Localities: Habit: elongated prisms Colour: lavender Fluorescence: pale orange-pink Description: Found in the cores of normal spodumene |
| ⓘ Spurrite Formula: Ca5(SiO4)2(CO3) Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Colour: bluish-gray Description: Schooner (circa 1985): "In some of the wollastonite pods at the Strickland quarry, bluish-gray spurrite occurs as very thin layers with grossularite and larnite. X-ray confirmation was obtained from a number of samples. Spurrite also is mixed with the granular wollastonite and its embedded minute gehlenite crystals; only X-ray peaks revealed its presence in that material." Studied by Waldemar T. Schaller of USGS. |
| ⓘ Staurolite Formula: Fe2+2Al9Si4O23(OH) Localities: Habit: prismatic Colour: dark brown Description: Thumbnail sized crystals in the Collins Hill Schist west of the pegmatite. |
| ⓘ Stewartite ? Formula: Mn2+Fe3+2(PO4)2(OH)2 · 8H2O Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Colour: pale yellow Description: According to Schooner (circa 1985) occurs as tiny yellow crystals in altered hureaulite. Specimens of hureaulite from the dump bulldozed in 1984 show small areas of a yellow alteration, possibly stewartite. So far an SEM-EDS analysis (2017) of yellow grains in lithiophilite have proven to be natrophilite. |
| ⓘ 'Stilbite Subgroup' Formula: M6-7[Al8-9Si27-28O72] · nH2O Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: elongated tabular micro-crystals Colour: yellow References: |
| ⓘ ' Formula: (Mn,Fe)(Ta,Nb)2O6 Localities: Description: Mistake for columbite-tantalite |
| ⓘ Tantalite-(Mn) Formula: Mn2+Ta2O6 Localities: Habit: elongated to tabular prisms Colour: deep maroon with iridescence Description: Usually as small (<1") but well-formed crystals in the mineralized part of the cleavelandite-quartz intermediate zone. Analyses, even just SG, are generally lacking. Schooner (1958) reports: "W. G. Foye reported [it] in 1929. An analysis of such material, made for Ronald Januzzi, showed the manganese oxide content to be 13.96% [but what are the other elements' abundances?]. Many rich specimens have been found on the old dumps. The author obtained several superb examples at the vein of lithium minerals in the bottom of the quarry, in 1954. Half inch crystals, and larger masses, were embedded in a matrix of cleavelandite and amblygonite [montebrasite]. The material showed a gradation from dark brown to bright red... the latter nearly transparent and of great beauty. Some was iridescent. The luster was resinous and the manganotantalite exhibited a perfect parting which gave it a micaceous appearance."
But some more brown crystals have later proven to be wodginite, which was not recognized in 1958.
Many reddish crystals with some transparency have been labeled tantalite-(Mn) but visually could be columbite-(Mn) and such crystals without supporting analyses should be labeled as columbite-(Mn)-tantalite-(Mn) series. |
| ⓘ 'Tapiolite' Formula: (Fe,Mn)(Ta,Nb)2O6 Locality: Hale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex County, Connecticut, USA Description: Bruce Jarnot did find and confirm tapiolite from the Hale Quarry. There were two specimens, one a complex crystal group (about 0.5 inches) and the other a similar size group that had altered 50% to pyrochlore. It resembled a hard yellow marble that, when split, showed the remains of tapiolite xls in the center. The IDs were made by EDX (element ratios) and X-ray unit crystal pattern.
|
| ⓘ Thorite Formula: Th(SiO4) References: Harold Moritz CollectionIdentified by Harold Moritz: Visual Identification |
| ⓘ Thorite var. Thorogummite Formula: (Th,U)(SiO4)1-x(OH)4x References: Harold Moritz CollectionIdentified by Harold Moritz: Visual Identification |
| ⓘ Titanite Formula: CaTiO(SiO4) |
| ⓘ Topaz Formula: Al2(SiO4)(F,OH)2 Localities: Colour: blue Description: Practically nonexistent. Only two, microscopic, blue etched crystals, barely visible to the naked eye were found in an extremely small vug in the cleavelandite of the lithium mineral zone. |
| ⓘ Torbernite Formula: Cu(UO2)2(PO4)2 · 12H2O |
| ⓘ 'Tourmaline' Formula: AD3G6(T6O18)(BO3)3X3Z Localities: Reported from at least 6 localities in this region. Habit: elongated prisms, acicular, capillary, asbestiform Colour: black, greens, blue, pink, lavender, gray, white Fluorescence: pink variety fluoresces blue Description: See descriptions of elbaite, foitite, and schorl for details. In the mineralized portion of the cleavelandite-quartz intermediate zone, associated with much K-rich albite and elbaite, occurs much secondary acicular to capillary tourmaline, some of it forming asbestiform mats. Some of it has distinct color and is likely elbaite, but much is white to black and could be other species. Analyses are lacking. |
| ⓘ 'Tourmaline var. Indicolite' References: |
| ⓘ 'Tourmaline var. Rubellite' |
| ⓘ 'Tourmaline var. Verdelite' |
| ⓘ 'Tourmaline var. Watermelon Tourmaline' Habit: unterminated, elongated prisms Colour: pink core, pale green rims Description: In the mineralized core zone. References: |
| ⓘ Tremolite Formula: ◻Ca2Mg5(Si8O22)(OH)2 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: needles Colour: white Description: Microcrystals in voids in amphibolite with adularia. References: |
| ⓘ Triphylite Formula: LiFe2+PO4 |
| ⓘ Triplite Formula: Mn2+2(PO4)F Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: irregular massive nodules Colour: red-brown Description: Schooner (circa 1985) reports: "Rich specimens, some dark red, garnet-like, with a conchoidal fracture, up to an inch across, were collected by the author on the old dump bulldozed in 1984. X-ray study confirmed the identity. Some of the triplite is altered to hureaulite, occurring as vugs of tiny crystals. It may be surrounded by white or tan fluorapatite, very fine-grained." References: |
| ⓘ Uraninite Formula: UO2 Localities: Reported from at least 10 localities in this region. Habit: octahedral Colour: black Description: Excellent crystals, up to half an inch in diameter, they were easy to obtain around 1941 and 1942. |
| ⓘ Uranophane Formula: Ca(UO2)2(SiO3OH)2 · 5H2O Localities: Reported from at least 6 localities in this region. Description: fine examples |
| ⓘ Vesuvianite Formula: Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 Localities: Habit: elongated subhedral to massive Colour: brown-green Description: Component of a calc-silicate mineral assemblage with calcite, epidote, grossular, scapolite, and quartz comprising boulders found on wooded private property east of Great Hill Road. These likely weathered out of the hosting Collins Hill Formation. |
| ⓘ Vivianite ? Formula: Fe2+Fe2+2(PO4)2 · 8H2O Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: thin film Colour: blue Description: Reported as thin blue films on weathered lithiophilite. This is unlikely given the absence of Fe in that mineral here. Lithiophilite is commonly associated with blue elbaite here, which could be mistaken for vivianite. |
| ⓘ Wardite Formula: NaAl3(PO4)2(OH)4 · 2H2O Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Description: Schooner (circa 1985) reports that "Wardite and wavellite occurred in a fine-grained replacement of natromontebrasite from the Strickland quarry. The rest of the sample was quartz. X-ray study revealed their existence." Natromontebrasite was discredited in 2007 as a mixture of wardite, montebrasite and lacroixite, which were all documented here by the study Schooner mentions. |
| ⓘ Wodginite Formula: Mn2+Sn4+Ta2O8 Localities: Habit: tapered, elongated prisms Colour: dark brown with iridescence Description: Fantastic tapered crystals, 2 to 6 cm long, translucent and sometimes showing a little iridescence. Typically in cleavelandite, associated with cassiterite, foitite grading into elbaite, gobbinsite and quartz. Long misidentified as cassiterite or tantalite-(Mn) (going back to even 1935 - see Jarnot (2011)) and too bad as it was not "discovered" until 1963 in Canada and Australia. Strickland could have been the type locality had it been recognized as a new mineral when the quarry was active.
Schooner (circa 1990) summarizes its identification:
A decade ago, the author found a loose 4 inch mass of montebrasite, studded with sharply formed little dark brown crystals, on one of the Strickland quarry dumps. These were tentatively classified as manganotantalite, despite visual differences. The X-ray pattern was later rechecked, with wodginite in mind, and the fit was close enough to warrant a spectrographic test, which showed the presence of tin. Pete J. Dunn and Peter Cerny have since made probe studies of the material. The original mass was broken into several rich specimens. The wodginite is in equant crystals, transparent under magnification, with a few little tabular amber crystals of manganotantalite. This material obviously represented only part of a concentration of wodginite in montebrasite. Several years ago, Bruce Jarnot encountered a small cleavelandite boulder, on the long narrow dump along the western edge of the hill, yielding maybe a dozen superb thumbnails of sharp, euhedral, reddish-black wodginite crystals, of a pyramidal aspect, up to almost an inch. These, too, were thought to be manganotantalite, until X-ray study proved them to be wodginite. At that point, the author became suspicious of an iridescent brown mineral, embedded in columnar green elbaite, collected around 1950. The X-ray pattern shows it to be wodginite, in yet another habit. Obviously, the mineral has been mistaken for other things! |
| ⓘ Wollastonite Formula: Ca3(Si3O9) Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: granular, bladed Colour: white Fluorescence: orange Description: Found by Schooner in 1953 and 1954, and reported in Schooner (1955):
"It is pure white in color, and granular massive in form. Fairly large pieces were obtained from the cores of lenticular quartz-actinolite-grossularite-diopside "horses" [pods] in biotite schist, from near the pegmatite. The mineral is photosensitive, turning brown and ugly if exposed to sunlight for very long. It is faintly fluorescent, in a pale orange tint, and strongly phosphorescent, in a brighter shade of the same color, under short-wave ultra-violet radiations".
In Schooner (1958) there is more information: "W. T. Schaller, of the U. S. Geological Survey, made an optical study of this wollastonite, to determine its manganese content through a correlation with the refractive index…which was 1.632, indicating about one percent of iron and manganese oxides."
Followed by this passage in Schooner (circa 1985): "Waldemar T. Schaller studied samples submitted by the author. The wollastonite, with tiny embedded tan gehlenite crystals, and occasional light yellow crystals of grossularite, occupies the centers of a few pods, surrounded by concentric zones of fine-grained tan grossularite, white quartz, and greenish diopside. Spurrite, larnite, vesuvianite, and calcite are rarely associated. Spurrite may, indeed, be mixed, granularly, with wollastonite. Small bladed crystals of wollastonite are seen on a few specimens." |
| ⓘ Formula: (Zn,Fe)S Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA - erroneously reported Description: Speculation by Schooner. References: |
| ⓘ Formula: (Zn,Fe,Mn) S [with O C H ] Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA - erroneously reported Description: Speculation by Schooner. References: |
| ⓘ Xenotime-(Y) ? Formula: Y(PO4) Localities: Pelton's Quarry, Portland, Middlesex County, Connecticut, USA ? (more information) Andrews Quarry (old Hale Quarry; Grandfather Andrews Quarry), Portland, Middlesex County, Connecticut, USA ? (more information) Schoonmaker Mine, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA ? (more information) Description: In a list of minerals without supporting information. |
| ⓘ 'Zinnwaldite' Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: micaceous Colour: golden-brown, purplish-grey Description: Found in the cleavelandite-quartz intermediate zone. Schooner (circa 1985) reports that "X-ray and spectrographic study, quite recently, have identified rich specimens, consisting of coarse golden-brown aggregates with zoned elbaite-schorl tourmaline. It can also be purplish-gray." |
| ⓘ Zircon Formula: Zr(SiO4) Localities: Reported from at least 8 localities in this region. Habit: bipyramids Colour: grey-brown Fluorescence: yellow Description: Small crystals scattered through all zones except the quartz core. |
| ⓘ Zircon var. Cyrtolite Formula: Zr[(SiO4),(OH)4] Localities: Reported from at least 6 localities in this region. |
| ⓘ Zoisite Formula: (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Graphite | 1.CB.05a | C |
| ⓘ | Native Sulphur | 1.CC.05 | S8 |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Greenockite ? | 2.CB.45 | CdS |
| ⓘ | Wurtzite var. Voltzite ? | 2.CB.45 | (Zn,Fe,Mn) S [with O C H ] |
| ⓘ | ? | 2.CB.45 | (Zn,Fe)S |
| ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Bismuthinite | 2.DB.05 | Bi2S3 |
| ⓘ | Molybdenite | 2.EA.30 | MoS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Löllingite | 2.EB.15a | FeAs2 |
| ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
| ⓘ | Cuprobismutite | 2.JA.10a | Cu8AgBi13S24 |
| Group 3 - Halides | |||
| ⓘ | Fluorite | 3.AB.25 | CaF2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Goethite | 4.00. | Fe3+O(OH) |
| ⓘ | 'Microlite Group' | 4.00. | A2-mTa2X6-wZ1-n |
| ⓘ | 'Pyrochlore Group' | 4.00. | A2Nb2(O,OH)6Z |
| ⓘ | 'var. Uranpyrochlore (of Hogarth 1977)' | 4.00. | (Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F) |
| ⓘ | Gahnite | 4.BB.05 | ZnAl2O4 |
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Ilmenite | 4.CB.05 | Fe2+TiO3 |
| ⓘ | Arsenolite ? | 4.CB.50 | As2O3 |
| ⓘ | Bismite | 4.CB.60 | Bi2O3 |
| ⓘ | Quartz var. Amethyst | 4.DA.05 | SiO2 |
| ⓘ | var. Chalcedony | 4.DA.05 | SiO2 |
| ⓘ | var. Citrine | 4.DA.05 | SiO2 |
| ⓘ | 4.DA.05 | SiO2 | |
| ⓘ | var. Rose Quartz | 4.DA.05 | SiO2 |
| ⓘ | var. Smoky Quartz | 4.DA.05 | SiO2 |
| ⓘ | var. Rock Crystal | 4.DA.05 | SiO2 |
| ⓘ | var. Milky Quartz | 4.DA.05 | SiO2 |
| ⓘ | Opal var. Opal-AN | 4.DA.10 | SiO2 · nH2O |
| ⓘ | 4.DA.10 | SiO2 · nH2O | |
| ⓘ | Cassiterite | 4.DB.05 | SnO2 |
| ⓘ | Pyrolusite ? | 4.DB.05 | Mn4+O2 |
| ⓘ | Rutile | 4.DB.05 | TiO2 |
| ⓘ | Ishikawaite | 4.DB.25 | U4+Fe2+Nb2O8 |
| ⓘ | Samarskite-(Y) | 4.DB.25 | YFe3+Nb2O8 |
| ⓘ | Columbite-(Fe) | 4.DB.35 | Fe2+Nb2O6 |
| ⓘ | Columbite-(Mn) | 4.DB.35 | Mn2+Nb2O6 |
| ⓘ | Tantalite-(Mn) | 4.DB.35 | Mn2+Ta2O6 |
| ⓘ | Wodginite | 4.DB.40 | Mn2+Sn4+Ta2O8 |
| ⓘ | Anatase | 4.DD.05 | TiO2 |
| ⓘ | Euxenite-(Y) ? | 4.DG.05 | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| ⓘ | Liandratite | 4.DH.35 | U(Nb,Ta)2O8 |
| ⓘ | Petscheckite | 4.DH.35 | UFe(Nb,Ta)2O8 |
| ⓘ | Uraninite | 4.DL.05 | UO2 |
| ⓘ | Groutite | 4.FD.10 | Mn3+O(OH) |
| ⓘ | Manganite ? | 4.FD.15 | Mn3+O(OH) |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| ⓘ | Rhodochrosite | 5.AB.05 | MnCO3 |
| ⓘ | Siderite | 5.AB.05 | FeCO3 |
| ⓘ | Aragonite | 5.AB.15 | CaCO3 |
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| ⓘ | Bismutite | 5.BE.25 | (BiO)2CO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Anglesite ? | 7.AD.35 | PbSO4 |
| ⓘ | Hexahydrite ? | 7.CB.25 | Mg(H2O)6(SO4) |
| ⓘ | Melanterite | 7.CB.35 | Fe2+(H2O)6(SO4) · H2O |
| ⓘ | Epsomite | 7.CB.40 | MgSO4 · 7H2O |
| ⓘ | Goslarite ? | 7.CB.40 | ZnSO4 · 7H2O |
| ⓘ | Pickeringite | 7.CB.85 | MgAl2(SO4)4 · 22H2O |
| ⓘ | Gypsum | 7.CD.40 | CaSO4 · 2H2O |
| ⓘ | Scheelite | 7.GA.05 | Ca(WO4) |
| ⓘ | Ferrimolybdite | 7.GB.30 | Fe2(MoO4)3 · nH2O |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Heterosite | 8.AB.10 | Fe3+(PO4) |
| ⓘ | Lithiophilite | 8.AB.10 | LiMn2+PO4 |
| ⓘ | Natrophilite | 8.AB.10 | NaMn2+PO4 |
| ⓘ | Purpurite | 8.AB.10 | Mn3+(PO4) |
| ⓘ | Lithiophilite var. Sicklerite | 8.AB.10 | Li1-x(Mn3+xMn2+1-x)PO4 |
| ⓘ | Triphylite | 8.AB.10 | LiFe2+PO4 |
| ⓘ | Xenotime-(Y) ? | 8.AD.35 | Y(PO4) |
| ⓘ | Monazite-(Ce) | 8.AD.50 | Ce(PO4) |
| ⓘ | Hydroxylherderite | 8.BA.10 | CaBe(PO4)(OH) |
| ⓘ | Amblygonite ? | 8.BB.05 | LiAl(PO4)F |
| ⓘ | Montebrasite | 8.BB.05 | LiAl(PO4)(OH) |
| ⓘ | Triplite | 8.BB.10 | Mn2+2(PO4)F |
| ⓘ | Augelite | 8.BE.05 | Al2(PO4)(OH)3 |
| ⓘ | Dickinsonite-(KMnNa) | 8.BF.05 | (KNa)(Mn2+◻)Ca(Na2Na)Mn2+13Al(PO4)11(PO4)(OH)2 |
| ⓘ | Lacroixite | 8.BH.10 | NaAl(PO4)F |
| ⓘ | Brazilianite | 8.BK.05 | NaAl3(PO4)2(OH)4 |
| ⓘ | Crandallite ? | 8.BL.10 | CaAl3(PO4)(PO3OH)(OH)6 |
| ⓘ | Fluorapatite | 8.BN.05 | Ca5(PO4)3F |
| ⓘ | Hydroxylapatite | 8.BN.05 | Ca5(PO4)3(OH) |
| ⓘ | Fluorapatite var. Manganese-bearing Fluorapatite | 8.BN.05 | (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH) |
| ⓘ | Hureaulite | 8.CB.10 | Mn2+5(PO3OH)2(PO4)2 · 4H2O |
| ⓘ | Reddingite ? | 8.CC.05 | (Mn2+,Fe2+)3(PO4)2 · 3H2O |
| ⓘ | Scorodite ? | 8.CD.10 | Fe3+AsO4 · 2H2O |
| ⓘ | Vivianite ? | 8.CE.40 | Fe2+Fe2+2(PO4)2 · 8H2O |
| ⓘ | Fairfieldite | 8.CG.05 | Ca2Mn2+(PO4)2 · 2H2O |
| ⓘ | Moraesite | 8.DA.05 | Be2(PO4)(OH) · 4H2O |
| ⓘ | Stewartite ? | 8.DC.30 | Mn2+Fe3+2(PO4)2(OH)2 · 8H2O |
| ⓘ | Planerite ? | 8.DD.15 | Al6(PO4)2(PO3OH)2(OH)8 · 4H2O |
| ⓘ | Eosphorite | 8.DD.20 | Mn2+Al(PO4)(OH)2 · H2O |
| ⓘ | Mitridatite | 8.DH.30 | Ca2Fe3+3(PO4)3O2 · 3H2O |
| ⓘ | Wardite | 8.DL.10 | NaAl3(PO4)2(OH)4 · 2H2O |
| ⓘ | Morinite ? | 8.DM.05 | NaCa2Al2(PO4)2(OH)F4 · 2H2O |
| ⓘ | Parsonsite | 8.EA.10 | Pb2(UO2)(PO4)2 |
| ⓘ | Autunite | 8.EB.05 | Ca(UO2)2(PO4)2 · 10-12H2O |
| ⓘ | Torbernite | 8.EB.05 | Cu(UO2)2(PO4)2 · 12H2O |
| ⓘ | Meta-autunite | 8.EB.10 | Ca(UO2)2(PO4)2 · 6H2O |
| ⓘ | Metatorbernite | 8.EB.10 | Cu(UO2)2(PO4)2 · 8H2O |
| ⓘ | Phosphuranylite | 8.EC.10 | KCa(H3O)3(UO2)7(PO4)4O4 · 8H2O |
| Group 9 - Silicates | |||
| ⓘ | Chrysotile ? | 9.00. | Mg3(Si2O5)(OH)4 |
| ⓘ | Eucryptite ? | 9.AA.05 | LiAlSiO4 |
| ⓘ | Phenakite | 9.AA.05 | Be2SiO4 |
| ⓘ | Larnite | 9.AD.05 | Ca2SiO4 |
| ⓘ | Almandine | 9.AD.25 | Fe2+3Al2(SiO4)3 |
| ⓘ | Grossular | 9.AD.25 | Ca3Al2(SiO4)3 |
| ⓘ | Spessartine | 9.AD.25 | Mn2+3Al2(SiO4)3 |
| ⓘ | Thorite | 9.AD.30 | Th(SiO4) |
| ⓘ | var. Thorogummite | 9.AD.30 | (Th,U)(SiO4)1-x(OH)4x |
| ⓘ | Zircon | 9.AD.30 | Zr(SiO4) |
| ⓘ | var. Cyrtolite | 9.AD.30 | Zr[(SiO4),(OH)4] |
| ⓘ | Euclase ? | 9.AE.10 | BeAl(SiO4)(OH) |
| ⓘ | Sillimanite | 9.AF.05 | Al2(SiO4)O |
| ⓘ | Kyanite | 9.AF.15 | Al2(SiO4)O |
| ⓘ | Staurolite | 9.AF.30 | Fe2+2Al9Si4O23(OH) |
| ⓘ | Topaz | 9.AF.35 | Al2(SiO4)(F,OH)2 |
| ⓘ | Titanite | 9.AG.15 | CaTiO(SiO4) |
| ⓘ | Spurrite | 9.AH.15 | Ca5(SiO4)2(CO3) |
| ⓘ | Uranophane | 9.AK.15 | Ca(UO2)2(SiO3OH)2 · 5H2O |
| ⓘ | Gehlenite | 9.BB.10 | Ca2Al[AlSiO7] |
| ⓘ | Bertrandite | 9.BD.05 | Be4(Si2O7)(OH)2 |
| ⓘ | Clinozoisite | 9.BG.05a | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
| ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ | Allanite-(Ce) | 9.BG.05b | (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH) |
| ⓘ | Zoisite | 9.BG.10 | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
| ⓘ | Vesuvianite | 9.BG.35 | Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 |
| ⓘ | Beryl var. Aquamarine | 9.CJ.05 | Be3Al2(Si6O18) |
| ⓘ | Bazzite | 9.CJ.05 | Be3Sc2(Si6O18) |
| ⓘ | Beryl | 9.CJ.05 | Be3Al2(Si6O18) |
| ⓘ | var. Morganite | 9.CJ.05 | Be3Al2(Si6O18) |
| ⓘ | var. Heliodor | 9.CJ.05 | Be3Al2(Si6O18) |
| ⓘ | var. Goshenite | 9.CJ.05 | Be3Al2(Si6O18) |
| ⓘ | Cordierite | 9.CJ.10 | Mg2Al4Si5O18 |
| ⓘ | Elbaite | 9.CK.05 | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) |
| ⓘ | Foitite | 9.CK.05 | ◻(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3(OH) |
| ⓘ | Schorl | 9.CK.05 | NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) |
| ⓘ | Augite | 9.DA.15 | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| ⓘ | Diopside | 9.DA.15 | CaMgSi2O6 |
| ⓘ | Augite var. Fassaite | 9.DA.15 | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| ⓘ | Spodumene var. Kunzite | 9.DA.30 | LiAlSi2O6 |
| ⓘ | 9.DA.30 | LiAlSi2O6 | |
| ⓘ | Actinolite | 9.DE.10 | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| ⓘ | Magnesio-hornblende | 9.DE.10 | ◻Ca2(Mg4Al)(Si7Al)O22(OH)2 |
| ⓘ | Tremolite | 9.DE.10 | ◻Ca2Mg5(Si8O22)(OH)2 |
| ⓘ | Bavenite | 9.DF.25 | Ca4Be2Al2Si9O26(OH)2 |
| ⓘ | Wollastonite | 9.DG.05 | Ca3(Si3O9) |
| ⓘ | Rhodonite ? | 9.DK.05 | CaMn3Mn[Si5O15] |
| ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | var. Schernikite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | Annite | 9.EC.20 | KFe2+3(AlSi3O10)(OH)2 |
| ⓘ | Masutomilite | 9.EC.20 | K(LiAlMn2+)[AlSi3O10]F2 |
| ⓘ | Phlogopite ? | 9.EC.20 | KMg3(AlSi3O10)(OH)2 |
| ⓘ | Bityite | 9.EC.35 | CaLiAl2(AlBeSi2O10)(OH)2 |
| ⓘ | Montmorillonite | 9.EC.40 | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| ⓘ | Cookeite | 9.EC.55 | (LiAl4◻)[AlSi3O10](OH)8 |
| ⓘ | Kaolinite | 9.ED.05 | Al2(Si2O5)(OH)4 |
| ⓘ | Halloysite | 9.ED.10 | Al2Si2O5(OH)4 · n(H2O) |
| ⓘ | Bismutoferrite | 9.ED.25 | Fe3+2Bi(SiO4)2(OH) |
| ⓘ | Petalite | 9.EF.05 | LiAl(Si4O10) |
| ⓘ | Microcline var. Amazonite | 9.FA.30 | K(AlSi3O8) |
| ⓘ | 9.FA.30 | K(AlSi3O8) | |
| ⓘ | Orthoclase ? | 9.FA.30 | K(AlSi3O8) |
| ⓘ | Albite | 9.FA.35 | Na(AlSi3O8) |
| ⓘ | Anorthite | 9.FA.35 | Ca(Al2Si2O8) |
| ⓘ | Albite var. Oligoclase | 9.FA.35 | (Na,Ca)[Al(Si,Al)Si2O8] |
| ⓘ | var. Peristerite | 9.FA.35 | Na(AlSi3O8) |
| ⓘ | var. Cleavelandite | 9.FA.35 | Na(AlSi3O8) |
| ⓘ | Natrolite ? | 9.GA.05 | Na2Al2Si3O10 · 2H2O |
| ⓘ | Analcime | 9.GB.05 | Na(AlSi2O6) · H2O |
| ⓘ | Pollucite | 9.GB.05 | (Cs,Na)2(Al2Si4O12) · 2H2O |
| ⓘ | Gobbinsite | 9.GC.05 | Na5(Si11Al5)O32 · 11H2O |
| Unclassified | |||
| ⓘ | 'K Feldspar var. Adularia' | - | KAlSi3O8 |
| ⓘ | 'Chlorite Group' | - | |
| ⓘ | 'Feldspar Group' | - | |
| ⓘ | 'Gummite' | - | |
| ⓘ | 'Tourmaline var. Indicolite' | - | AD3G6(T6O18)(BO3)3X3Z |
| ⓘ | 'Lepidolite' | - | |
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Monazite Group' | - | REE(PO4) |
| ⓘ | 'Natromontebrasite' | - | |
| ⓘ | 'Tourmaline var. Rubellite' | - | AD3G6(T6O18)(BO3)3X3Z |
| ⓘ | 'Stilbite Subgroup' | - | M6-7[Al8-9Si27-28O72] · nH2O |
| ⓘ | 'Tantalite' ? | - | (Mn,Fe)(Ta,Nb)2O6 |
| ⓘ | 'Tapiolite' | - | (Fe,Mn)(Ta,Nb)2O6 |
| ⓘ | 'Tourmaline' | - | AD3G6(T6O18)(BO3)3X3Z |
| ⓘ | 'var. Verdelite' | - | AD3G6(T6O18)(BO3)3X3Z |
| ⓘ | 'Zinnwaldite' | - | |
| ⓘ | 'Columbite-(Fe)-Columbite-(Mn) Series' | - | |
| ⓘ | 'Scapolite' | - | |
| ⓘ | 'Hornblende Root Name Group' | - | ◻Ca2(C2+4C3+)(AlSi7O22)W2 |
| ⓘ | 'Pinite' | - | |
| ⓘ | 'K Feldspar' | - | |
| ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
| ⓘ | 'Columbite-Tantalite' | - | |
| ⓘ | 'Tourmaline var. Watermelon Tourmaline' | - | AD3G6(T6O18)(BO3)3X3Z |
| ⓘ | 'Manganese Oxides var. Manganese Dendrites' | - | |
| ⓘ | '' | - | |
| ⓘ | 'Columbite-(Mn)-Tantalite-(Mn) Series' | - | |
| ⓘ | 'Allanite Group' | - | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| H | ⓘ Allanite-(Ce) | (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH) |
| H | ⓘ Analcime | Na(AlSi2O6) · H2O |
| H | ⓘ Annite | KFe32+(AlSi3O10)(OH)2 |
| H | ⓘ Autunite | Ca(UO2)2(PO4)2 · 10-12H2O |
| H | ⓘ Augelite | Al2(PO4)(OH)3 |
| H | ⓘ Bavenite | Ca4Be2Al2Si9O26(OH)2 |
| H | ⓘ Bertrandite | Be4(Si2O7)(OH)2 |
| H | ⓘ Bismutoferrite | Fe23+Bi(SiO4)2(OH) |
| H | ⓘ Bityite | CaLiAl2(AlBeSi2O10)(OH)2 |
| H | ⓘ Brazilianite | NaAl3(PO4)2(OH)4 |
| H | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
| H | ⓘ Clinozoisite | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
| H | ⓘ Cookeite | (LiAl4◻)[AlSi3O10](OH)8 |
| H | ⓘ Crandallite | CaAl3(PO4)(PO3OH)(OH)6 |
| H | ⓘ Dickinsonite-(KMnNa) | (KNa)(Mn2+◻)Ca(Na2Na)Mn132+Al(PO4)11(PO4)(OH)2 |
| H | ⓘ Elbaite | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) |
| H | ⓘ Eosphorite | Mn2+Al(PO4)(OH)2 · H2O |
| H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| H | ⓘ Epsomite | MgSO4 · 7H2O |
| H | ⓘ Euclase | BeAl(SiO4)(OH) |
| H | ⓘ Fairfieldite | Ca2Mn2+(PO4)2 · 2H2O |
| H | ⓘ Ferrimolybdite | Fe2(MoO4)3 · nH2O |
| H | ⓘ Foitite | ◻(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3(OH) |
| H | ⓘ Gobbinsite | Na5(Si11Al5)O32 · 11H2O |
| H | ⓘ Goethite | Fe3+O(OH) |
| H | ⓘ Goslarite | ZnSO4 · 7H2O |
| H | ⓘ Groutite | Mn3+O(OH) |
| H | ⓘ Gypsum | CaSO4 · 2H2O |
| H | ⓘ Halloysite | Al2Si2O5(OH)4 · n(H2O) |
| H | ⓘ Hexahydrite | Mg(H2O)6(SO4) |
| H | ⓘ Hureaulite | Mn52+(PO3OH)2(PO4)2 · 4H2O |
| H | ⓘ Opal var. Opal-AN | SiO2 · nH2O |
| H | ⓘ Hydroxylherderite | CaBe(PO4)(OH) |
| H | ⓘ Hydroxylapatite | Ca5(PO4)3(OH) |
| H | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| H | ⓘ Manganite | Mn3+O(OH) |
| H | ⓘ Magnesio-hornblende | ◻Ca2(Mg4Al)(Si7Al)O22(OH)2 |
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| H | ⓘ Fluorapatite var. Manganese-bearing Fluorapatite | (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH) |
| H | ⓘ Melanterite | Fe2+(H2O)6(SO4) · H2O |
| H | ⓘ Meta-autunite | Ca(UO2)2(PO4)2 · 6H2O |
| H | ⓘ Metatorbernite | Cu(UO2)2(PO4)2 · 8H2O |
| H | ⓘ Mitridatite | Ca2Fe33+(PO4)3O2 · 3H2O |
| H | ⓘ Montebrasite | LiAl(PO4)(OH) |
| H | ⓘ Moraesite | Be2(PO4)(OH) · 4H2O |
| H | ⓘ Morinite | NaCa2Al2(PO4)2(OH)F4 · 2H2O |
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| H | ⓘ Natrolite | Na2Al2Si3O10 · 2H2O |
| H | ⓘ Opal | SiO2 · nH2O |
| H | ⓘ Phosphuranylite | KCa(H3O)3(UO2)7(PO4)4O4 · 8H2O |
| H | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| H | ⓘ Pickeringite | MgAl2(SO4)4 · 22H2O |
| H | ⓘ Planerite | Al6(PO4)2(PO3OH)2(OH)8 · 4H2O |
| H | ⓘ Pollucite | (Cs,Na)2(Al2Si4O12) · 2H2O |
| H | ⓘ Pyrochlore Group | A2Nb2(O,OH)6Z |
| H | ⓘ Reddingite | (Mn2+,Fe2+)3(PO4)2 · 3H2O |
| H | ⓘ Muscovite var. Schernikite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| H | ⓘ Scorodite | Fe3+AsO4 · 2H2O |
| H | ⓘ Staurolite | Fe22+Al9Si4O23(OH) |
| H | ⓘ Stewartite | Mn2+Fe23+(PO4)2(OH)2 · 8H2O |
| H | ⓘ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| H | ⓘ Thorite var. Thorogummite | (Th,U)(SiO4)1-x(OH)4x |
| H | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| H | ⓘ Torbernite | Cu(UO2)2(PO4)2 · 12H2O |
| H | ⓘ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| H | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| H | ⓘ Pyrochlore Group var. Uranpyrochlore (of Hogarth 1977) | (Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F) |
| H | ⓘ Vivianite | Fe2+Fe22+(PO4)2 · 8H2O |
| H | ⓘ Wurtzite var. Voltzite | (Zn,Fe,Mn) S [with O C H ] |
| H | ⓘ Vesuvianite | Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 |
| H | ⓘ Wardite | NaAl3(PO4)2(OH)4 · 2H2O |
| H | ⓘ Zinnwaldite | |
| H | ⓘ Zoisite | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
| H | ⓘ Zircon var. Cyrtolite | Zr[(SiO4),(OH)4] |
| H | ⓘ Allanite Group | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
| Li | Lithium | |
| Li | ⓘ Amblygonite | LiAl(PO4)F |
| Li | ⓘ Bityite | CaLiAl2(AlBeSi2O10)(OH)2 |
| Li | ⓘ Cookeite | (LiAl4◻)[AlSi3O10](OH)8 |
| Li | ⓘ Elbaite | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) |
| Li | ⓘ Eucryptite | LiAlSiO4 |
| Li | ⓘ Spodumene var. Kunzite | LiAlSi2O6 |
| Li | ⓘ Lithiophilite | LiMn2+PO4 |
| Li | ⓘ Masutomilite | K(LiAlMn2+)[AlSi3O10]F2 |
| Li | ⓘ Montebrasite | LiAl(PO4)(OH) |
| Li | ⓘ Petalite | LiAl(Si4O10) |
| Li | ⓘ Lithiophilite var. Sicklerite | Li1-x(Mnx3+Mn2+1-x)PO4 |
| Li | ⓘ Spodumene | LiAlSi2O6 |
| Li | ⓘ Triphylite | LiFe2+PO4 |
| Li | ⓘ Zinnwaldite | |
| Be | Beryllium | |
| Be | ⓘ Bavenite | Ca4Be2Al2Si9O26(OH)2 |
| Be | ⓘ Bazzite | Be3Sc2(Si6O18) |
| Be | ⓘ Bertrandite | Be4(Si2O7)(OH)2 |
| Be | ⓘ Bityite | CaLiAl2(AlBeSi2O10)(OH)2 |
| Be | ⓘ Beryl | Be3Al2(Si6O18) |
| Be | ⓘ Euclase | BeAl(SiO4)(OH) |
| Be | ⓘ Hydroxylherderite | CaBe(PO4)(OH) |
| Be | ⓘ Moraesite | Be2(PO4)(OH) · 4H2O |
| Be | ⓘ Beryl var. Morganite | Be3Al2(Si6O18) |
| Be | ⓘ Phenakite | Be2SiO4 |
| Be | ⓘ Beryl var. Heliodor | Be3Al2(Si6O18) |
| Be | ⓘ Beryl var. Goshenite | Be3Al2(Si6O18) |
| B | Boron | |
| B | ⓘ Elbaite | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) |
| B | ⓘ Foitite | ◻(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3(OH) |
| B | ⓘ Tourmaline var. Indicolite | |
| B | ⓘ Tourmaline var. Rubellite | |
| B | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| B | ⓘ Tourmaline | AD3G6(T6O18)(BO3)3X3Z |
| B | ⓘ Tourmaline var. Verdelite | |
| C | Carbon | |
| C | ⓘ Aragonite | CaCO3 |
| C | ⓘ Bismutite | (BiO)2CO3 |
| C | ⓘ Calcite | CaCO3 |
| C | ⓘ Graphite | C |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| C | ⓘ Rhodochrosite | MnCO3 |
| C | ⓘ Siderite | FeCO3 |
| C | ⓘ Spurrite | Ca5(SiO4)2(CO3) |
| C | ⓘ Wurtzite var. Voltzite | (Zn,Fe,Mn) S [with O C H ] |
| O | Oxygen | |
| O | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| O | ⓘ K Feldspar var. Adularia | KAlSi3O8 |
| O | ⓘ Albite | Na(AlSi3O8) |
| O | ⓘ Allanite-(Ce) | (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH) |
| O | ⓘ Microcline var. Amazonite | K(AlSi3O8) |
| O | ⓘ Amblygonite | LiAl(PO4)F |
| O | ⓘ Quartz var. Amethyst | SiO2 |
| O | ⓘ Analcime | Na(AlSi2O6) · H2O |
| O | ⓘ Anatase | TiO2 |
| O | ⓘ Anglesite | PbSO4 |
| O | ⓘ Annite | KFe32+(AlSi3O10)(OH)2 |
| O | ⓘ Anorthite | Ca(Al2Si2O8) |
| O | ⓘ Arsenolite | As2O3 |
| O | ⓘ Aragonite | CaCO3 |
| O | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| O | ⓘ Autunite | Ca(UO2)2(PO4)2 · 10-12H2O |
| O | ⓘ Augelite | Al2(PO4)(OH)3 |
| O | ⓘ Almandine | Fe32+Al2(SiO4)3 |
| O | ⓘ Bavenite | Ca4Be2Al2Si9O26(OH)2 |
| O | ⓘ Bazzite | Be3Sc2(Si6O18) |
| O | ⓘ Bertrandite | Be4(Si2O7)(OH)2 |
| O | ⓘ Bismutoferrite | Fe23+Bi(SiO4)2(OH) |
| O | ⓘ Bismite | Bi2O3 |
| O | ⓘ Bismutite | (BiO)2CO3 |
| O | ⓘ Bityite | CaLiAl2(AlBeSi2O10)(OH)2 |
| O | ⓘ Brazilianite | NaAl3(PO4)2(OH)4 |
| O | ⓘ Beryl | Be3Al2(Si6O18) |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Cassiterite | SnO2 |
| O | ⓘ Quartz var. Chalcedony | SiO2 |
| O | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
| O | ⓘ Quartz var. Citrine | SiO2 |
| O | ⓘ Clinozoisite | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
| O | ⓘ Cookeite | (LiAl4◻)[AlSi3O10](OH)8 |
| O | ⓘ Cordierite | Mg2Al4Si5O18 |
| O | ⓘ Crandallite | CaAl3(PO4)(PO3OH)(OH)6 |
| O | ⓘ Dickinsonite-(KMnNa) | (KNa)(Mn2+◻)Ca(Na2Na)Mn132+Al(PO4)11(PO4)(OH)2 |
| O | ⓘ Diopside | CaMgSi2O6 |
| O | ⓘ Elbaite | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) |
| O | ⓘ Eosphorite | Mn2+Al(PO4)(OH)2 · H2O |
| O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | ⓘ Epsomite | MgSO4 · 7H2O |
| O | ⓘ Euclase | BeAl(SiO4)(OH) |
| O | ⓘ Eucryptite | LiAlSiO4 |
| O | ⓘ Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| O | ⓘ Fairfieldite | Ca2Mn2+(PO4)2 · 2H2O |
| O | ⓘ Ferrimolybdite | Fe2(MoO4)3 · nH2O |
| O | ⓘ Columbite-(Fe) | Fe2+Nb2O6 |
| O | ⓘ Fluorapatite | Ca5(PO4)3F |
| O | ⓘ Foitite | ◻(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3(OH) |
| O | ⓘ Gahnite | ZnAl2O4 |
| O | ⓘ Gehlenite | Ca2Al[AlSiO7] |
| O | ⓘ Gobbinsite | Na5(Si11Al5)O32 · 11H2O |
| O | ⓘ Goethite | Fe3+O(OH) |
| O | ⓘ Goslarite | ZnSO4 · 7H2O |
| O | ⓘ Grossular | Ca3Al2(SiO4)3 |
| O | ⓘ Groutite | Mn3+O(OH) |
| O | ⓘ Gypsum | CaSO4 · 2H2O |
| O | ⓘ Halloysite | Al2Si2O5(OH)4 · n(H2O) |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Heterosite | Fe3+(PO4) |
| O | ⓘ Hexahydrite | Mg(H2O)6(SO4) |
| O | ⓘ Hureaulite | Mn52+(PO3OH)2(PO4)2 · 4H2O |
| O | ⓘ Opal var. Opal-AN | SiO2 · nH2O |
| O | ⓘ Hydroxylherderite | CaBe(PO4)(OH) |
| O | ⓘ Hydroxylapatite | Ca5(PO4)3(OH) |
| O | ⓘ Ilmenite | Fe2+TiO3 |
| O | ⓘ Tourmaline var. Indicolite | |
| O | ⓘ Ishikawaite | U4+Fe2+Nb2O8 |
| O | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| O | ⓘ Spodumene var. Kunzite | LiAlSi2O6 |
| O | ⓘ Kyanite | Al2(SiO4)O |
| O | ⓘ Lacroixite | NaAl(PO4)F |
| O | ⓘ Larnite | Ca2SiO4 |
| O | ⓘ Liandratite | U(Nb,Ta)2O8 |
| O | ⓘ Lithiophilite | LiMn2+PO4 |
| O | ⓘ Manganite | Mn3+O(OH) |
| O | ⓘ Columbite-(Mn) | Mn2+Nb2O6 |
| O | ⓘ Tantalite-(Mn) | Mn2+Ta2O6 |
| O | ⓘ Magnesio-hornblende | ◻Ca2(Mg4Al)(Si7Al)O22(OH)2 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | ⓘ Fluorapatite var. Manganese-bearing Fluorapatite | (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH) |
| O | ⓘ Masutomilite | K(LiAlMn2+)[AlSi3O10]F2 |
| O | ⓘ Melanterite | Fe2+(H2O)6(SO4) · H2O |
| O | ⓘ Meta-autunite | Ca(UO2)2(PO4)2 · 6H2O |
| O | ⓘ Metatorbernite | Cu(UO2)2(PO4)2 · 8H2O |
| O | ⓘ Microcline | K(AlSi3O8) |
| O | ⓘ Mitridatite | Ca2Fe33+(PO4)3O2 · 3H2O |
| O | ⓘ Monazite Group | REE(PO4) |
| O | ⓘ Monazite-(Ce) | Ce(PO4) |
| O | ⓘ Montebrasite | LiAl(PO4)(OH) |
| O | ⓘ Moraesite | Be2(PO4)(OH) · 4H2O |
| O | ⓘ Beryl var. Morganite | Be3Al2(Si6O18) |
| O | ⓘ Morinite | NaCa2Al2(PO4)2(OH)F4 · 2H2O |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| O | ⓘ Natrophilite | NaMn2+PO4 |
| O | ⓘ Natrolite | Na2Al2Si3O10 · 2H2O |
| O | ⓘ Albite var. Oligoclase | (Na,Ca)[Al(Si,Al)Si2O8] |
| O | ⓘ Opal | SiO2 · nH2O |
| O | ⓘ Orthoclase | K(AlSi3O8) |
| O | ⓘ Parsonsite | Pb2(UO2)(PO4)2 |
| O | ⓘ Petalite | LiAl(Si4O10) |
| O | ⓘ Petscheckite | UFe(Nb,Ta)2O8 |
| O | ⓘ Phosphuranylite | KCa(H3O)3(UO2)7(PO4)4O4 · 8H2O |
| O | ⓘ Phenakite | Be2SiO4 |
| O | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| O | ⓘ Pickeringite | MgAl2(SO4)4 · 22H2O |
| O | ⓘ Planerite | Al6(PO4)2(PO3OH)2(OH)8 · 4H2O |
| O | ⓘ Pollucite | (Cs,Na)2(Al2Si4O12) · 2H2O |
| O | ⓘ Purpurite | Mn3+(PO4) |
| O | ⓘ Pyrochlore Group | A2Nb2(O,OH)6Z |
| O | ⓘ Pyrolusite | Mn4+O2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Reddingite | (Mn2+,Fe2+)3(PO4)2 · 3H2O |
| O | ⓘ Rhodochrosite | MnCO3 |
| O | ⓘ Rhodonite | CaMn3Mn[Si5O15] |
| O | ⓘ Quartz var. Rose Quartz | SiO2 |
| O | ⓘ Tourmaline var. Rubellite | |
| O | ⓘ Rutile | TiO2 |
| O | ⓘ Samarskite-(Y) | YFe3+Nb2O8 |
| O | ⓘ Scheelite | Ca(WO4) |
| O | ⓘ Muscovite var. Schernikite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| O | ⓘ Scorodite | Fe3+AsO4 · 2H2O |
| O | ⓘ Lithiophilite var. Sicklerite | Li1-x(Mnx3+Mn2+1-x)PO4 |
| O | ⓘ Siderite | FeCO3 |
| O | ⓘ Sillimanite | Al2(SiO4)O |
| O | ⓘ Quartz var. Smoky Quartz | SiO2 |
| O | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
| O | ⓘ Spodumene | LiAlSi2O6 |
| O | ⓘ Spurrite | Ca5(SiO4)2(CO3) |
| O | ⓘ Staurolite | Fe22+Al9Si4O23(OH) |
| O | ⓘ Stewartite | Mn2+Fe23+(PO4)2(OH)2 · 8H2O |
| O | ⓘ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| O | ⓘ Tantalite | (Mn,Fe)(Ta,Nb)2O6 |
| O | ⓘ Tapiolite | (Fe,Mn)(Ta,Nb)2O6 |
| O | ⓘ Thorite | Th(SiO4) |
| O | ⓘ Thorite var. Thorogummite | (Th,U)(SiO4)1-x(OH)4x |
| O | ⓘ Titanite | CaTiO(SiO4) |
| O | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| O | ⓘ Torbernite | Cu(UO2)2(PO4)2 · 12H2O |
| O | ⓘ Tourmaline | AD3G6(T6O18)(BO3)3X3Z |
| O | ⓘ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| O | ⓘ Triphylite | LiFe2+PO4 |
| O | ⓘ Triplite | Mn22+(PO4)F |
| O | ⓘ Uraninite | UO2 |
| O | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| O | ⓘ Pyrochlore Group var. Uranpyrochlore (of Hogarth 1977) | (Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F) |
| O | ⓘ Tourmaline var. Verdelite | |
| O | ⓘ Vivianite | Fe2+Fe22+(PO4)2 · 8H2O |
| O | ⓘ Wurtzite var. Voltzite | (Zn,Fe,Mn) S [with O C H ] |
| O | ⓘ Vesuvianite | Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 |
| O | ⓘ Wardite | NaAl3(PO4)2(OH)4 · 2H2O |
| O | ⓘ Wodginite | Mn2+Sn4+Ta2O8 |
| O | ⓘ Wollastonite | Ca3(Si3O9) |
| O | ⓘ Xenotime-(Y) | Y(PO4) |
| O | ⓘ Zinnwaldite | |
| O | ⓘ Zircon | Zr(SiO4) |
| O | ⓘ Zoisite | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
| O | ⓘ Albite var. Peristerite | Na(AlSi3O8) |
| O | ⓘ Quartz var. Rock Crystal | SiO2 |
| O | ⓘ Quartz var. Milky Quartz | SiO2 |
| O | ⓘ Beryl var. Heliodor | Be3Al2(Si6O18) |
| O | ⓘ Zircon var. Cyrtolite | Zr[(SiO4),(OH)4] |
| O | ⓘ Beryl var. Goshenite | Be3Al2(Si6O18) |
| O | ⓘ Albite var. Cleavelandite | Na(AlSi3O8) |
| O | ⓘ Columbite-(Fe)-Columbite-(Mn) Series | |
| O | ⓘ Hornblende Root Name Group | ◻Ca2(C42+C3+)(AlSi7O22)W2 |
| O | ⓘ Garnet Group | X3Z2(SiO4)3 |
| O | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| O | ⓘ Allanite Group | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
| F | Fluorine | |
| F | ⓘ Amblygonite | LiAl(PO4)F |
| F | ⓘ Fluorapatite | Ca5(PO4)3F |
| F | ⓘ Fluorite | CaF2 |
| F | ⓘ Lacroixite | NaAl(PO4)F |
| F | ⓘ Fluorapatite var. Manganese-bearing Fluorapatite | (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH) |
| F | ⓘ Masutomilite | K(LiAlMn2+)[AlSi3O10]F2 |
| F | ⓘ Morinite | NaCa2Al2(PO4)2(OH)F4 · 2H2O |
| F | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| F | ⓘ Triplite | Mn22+(PO4)F |
| F | ⓘ Pyrochlore Group var. Uranpyrochlore (of Hogarth 1977) | (Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F) |
| F | ⓘ Zinnwaldite | |
| Na | Sodium | |
| Na | ⓘ Albite | Na(AlSi3O8) |
| Na | ⓘ Analcime | Na(AlSi2O6) · H2O |
| Na | ⓘ Brazilianite | NaAl3(PO4)2(OH)4 |
| Na | ⓘ Dickinsonite-(KMnNa) | (KNa)(Mn2+◻)Ca(Na2Na)Mn132+Al(PO4)11(PO4)(OH)2 |
| Na | ⓘ Elbaite | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) |
| Na | ⓘ Gobbinsite | Na5(Si11Al5)O32 · 11H2O |
| Na | ⓘ Lacroixite | NaAl(PO4)F |
| Na | ⓘ Morinite | NaCa2Al2(PO4)2(OH)F4 · 2H2O |
| Na | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Na | ⓘ Natrophilite | NaMn2+PO4 |
| Na | ⓘ Natrolite | Na2Al2Si3O10 · 2H2O |
| Na | ⓘ Albite var. Oligoclase | (Na,Ca)[Al(Si,Al)Si2O8] |
| Na | ⓘ Pollucite | (Cs,Na)2(Al2Si4O12) · 2H2O |
| Na | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Na | ⓘ Wardite | NaAl3(PO4)2(OH)4 · 2H2O |
| Na | ⓘ Albite var. Peristerite | Na(AlSi3O8) |
| Na | ⓘ Albite var. Cleavelandite | Na(AlSi3O8) |
| Na | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| Mg | Magnesium | |
| Mg | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Mg | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Mg | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
| Mg | ⓘ Cordierite | Mg2Al4Si5O18 |
| Mg | ⓘ Diopside | CaMgSi2O6 |
| Mg | ⓘ Epsomite | MgSO4 · 7H2O |
| Mg | ⓘ Hexahydrite | Mg(H2O)6(SO4) |
| Mg | ⓘ Magnesio-hornblende | ◻Ca2(Mg4Al)(Si7Al)O22(OH)2 |
| Mg | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Mg | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Mg | ⓘ Pickeringite | MgAl2(SO4)4 · 22H2O |
| Mg | ⓘ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| Mg | ⓘ Vesuvianite | Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 |
| Mg | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| Al | Aluminium | |
| Al | ⓘ K Feldspar var. Adularia | KAlSi3O8 |
| Al | ⓘ Albite | Na(AlSi3O8) |
| Al | ⓘ Allanite-(Ce) | (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH) |
| Al | ⓘ Microcline var. Amazonite | K(AlSi3O8) |
| Al | ⓘ Amblygonite | LiAl(PO4)F |
| Al | ⓘ Analcime | Na(AlSi2O6) · H2O |
| Al | ⓘ Annite | KFe32+(AlSi3O10)(OH)2 |
| Al | ⓘ Anorthite | Ca(Al2Si2O8) |
| Al | ⓘ Augelite | Al2(PO4)(OH)3 |
| Al | ⓘ Almandine | Fe32+Al2(SiO4)3 |
| Al | ⓘ Bavenite | Ca4Be2Al2Si9O26(OH)2 |
| Al | ⓘ Bityite | CaLiAl2(AlBeSi2O10)(OH)2 |
| Al | ⓘ Brazilianite | NaAl3(PO4)2(OH)4 |
| Al | ⓘ Beryl | Be3Al2(Si6O18) |
| Al | ⓘ Clinozoisite | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
| Al | ⓘ Cookeite | (LiAl4◻)[AlSi3O10](OH)8 |
| Al | ⓘ Cordierite | Mg2Al4Si5O18 |
| Al | ⓘ Crandallite | CaAl3(PO4)(PO3OH)(OH)6 |
| Al | ⓘ Dickinsonite-(KMnNa) | (KNa)(Mn2+◻)Ca(Na2Na)Mn132+Al(PO4)11(PO4)(OH)2 |
| Al | ⓘ Elbaite | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) |
| Al | ⓘ Eosphorite | Mn2+Al(PO4)(OH)2 · H2O |
| Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Al | ⓘ Euclase | BeAl(SiO4)(OH) |
| Al | ⓘ Eucryptite | LiAlSiO4 |
| Al | ⓘ Foitite | ◻(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3(OH) |
| Al | ⓘ Gahnite | ZnAl2O4 |
| Al | ⓘ Gehlenite | Ca2Al[AlSiO7] |
| Al | ⓘ Gobbinsite | Na5(Si11Al5)O32 · 11H2O |
| Al | ⓘ Grossular | Ca3Al2(SiO4)3 |
| Al | ⓘ Halloysite | Al2Si2O5(OH)4 · n(H2O) |
| Al | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| Al | ⓘ Spodumene var. Kunzite | LiAlSi2O6 |
| Al | ⓘ Kyanite | Al2(SiO4)O |
| Al | ⓘ Lacroixite | NaAl(PO4)F |
| Al | ⓘ Magnesio-hornblende | ◻Ca2(Mg4Al)(Si7Al)O22(OH)2 |
| Al | ⓘ Masutomilite | K(LiAlMn2+)[AlSi3O10]F2 |
| Al | ⓘ Microcline | K(AlSi3O8) |
| Al | ⓘ Montebrasite | LiAl(PO4)(OH) |
| Al | ⓘ Beryl var. Morganite | Be3Al2(Si6O18) |
| Al | ⓘ Morinite | NaCa2Al2(PO4)2(OH)F4 · 2H2O |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Al | ⓘ Natrolite | Na2Al2Si3O10 · 2H2O |
| Al | ⓘ Albite var. Oligoclase | (Na,Ca)[Al(Si,Al)Si2O8] |
| Al | ⓘ Orthoclase | K(AlSi3O8) |
| Al | ⓘ Petalite | LiAl(Si4O10) |
| Al | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Al | ⓘ Pickeringite | MgAl2(SO4)4 · 22H2O |
| Al | ⓘ Planerite | Al6(PO4)2(PO3OH)2(OH)8 · 4H2O |
| Al | ⓘ Pollucite | (Cs,Na)2(Al2Si4O12) · 2H2O |
| Al | ⓘ Muscovite var. Schernikite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Al | ⓘ Sillimanite | Al2(SiO4)O |
| Al | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
| Al | ⓘ Spodumene | LiAlSi2O6 |
| Al | ⓘ Staurolite | Fe22+Al9Si4O23(OH) |
| Al | ⓘ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| Al | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| Al | ⓘ Vesuvianite | Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 |
| Al | ⓘ Wardite | NaAl3(PO4)2(OH)4 · 2H2O |
| Al | ⓘ Zinnwaldite | |
| Al | ⓘ Zoisite | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
| Al | ⓘ Albite var. Peristerite | Na(AlSi3O8) |
| Al | ⓘ Beryl var. Heliodor | Be3Al2(Si6O18) |
| Al | ⓘ Beryl var. Goshenite | Be3Al2(Si6O18) |
| Al | ⓘ Albite var. Cleavelandite | Na(AlSi3O8) |
| Al | ⓘ Hornblende Root Name Group | ◻Ca2(C42+C3+)(AlSi7O22)W2 |
| Al | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| Si | Silicon | |
| Si | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Si | ⓘ K Feldspar var. Adularia | KAlSi3O8 |
| Si | ⓘ Albite | Na(AlSi3O8) |
| Si | ⓘ Allanite-(Ce) | (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH) |
| Si | ⓘ Microcline var. Amazonite | K(AlSi3O8) |
| Si | ⓘ Quartz var. Amethyst | SiO2 |
| Si | ⓘ Analcime | Na(AlSi2O6) · H2O |
| Si | ⓘ Annite | KFe32+(AlSi3O10)(OH)2 |
| Si | ⓘ Anorthite | Ca(Al2Si2O8) |
| Si | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Si | ⓘ Almandine | Fe32+Al2(SiO4)3 |
| Si | ⓘ Bavenite | Ca4Be2Al2Si9O26(OH)2 |
| Si | ⓘ Bazzite | Be3Sc2(Si6O18) |
| Si | ⓘ Bertrandite | Be4(Si2O7)(OH)2 |
| Si | ⓘ Bismutoferrite | Fe23+Bi(SiO4)2(OH) |
| Si | ⓘ Bityite | CaLiAl2(AlBeSi2O10)(OH)2 |
| Si | ⓘ Beryl | Be3Al2(Si6O18) |
| Si | ⓘ Quartz var. Chalcedony | SiO2 |
| Si | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
| Si | ⓘ Quartz var. Citrine | SiO2 |
| Si | ⓘ Clinozoisite | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
| Si | ⓘ Cookeite | (LiAl4◻)[AlSi3O10](OH)8 |
| Si | ⓘ Cordierite | Mg2Al4Si5O18 |
| Si | ⓘ Diopside | CaMgSi2O6 |
| Si | ⓘ Elbaite | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) |
| Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | ⓘ Euclase | BeAl(SiO4)(OH) |
| Si | ⓘ Eucryptite | LiAlSiO4 |
| Si | ⓘ Foitite | ◻(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3(OH) |
| Si | ⓘ Gehlenite | Ca2Al[AlSiO7] |
| Si | ⓘ Gobbinsite | Na5(Si11Al5)O32 · 11H2O |
| Si | ⓘ Grossular | Ca3Al2(SiO4)3 |
| Si | ⓘ Halloysite | Al2Si2O5(OH)4 · n(H2O) |
| Si | ⓘ Opal var. Opal-AN | SiO2 · nH2O |
| Si | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| Si | ⓘ Spodumene var. Kunzite | LiAlSi2O6 |
| Si | ⓘ Kyanite | Al2(SiO4)O |
| Si | ⓘ Larnite | Ca2SiO4 |
| Si | ⓘ Magnesio-hornblende | ◻Ca2(Mg4Al)(Si7Al)O22(OH)2 |
| Si | ⓘ Masutomilite | K(LiAlMn2+)[AlSi3O10]F2 |
| Si | ⓘ Microcline | K(AlSi3O8) |
| Si | ⓘ Beryl var. Morganite | Be3Al2(Si6O18) |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Si | ⓘ Natrolite | Na2Al2Si3O10 · 2H2O |
| Si | ⓘ Albite var. Oligoclase | (Na,Ca)[Al(Si,Al)Si2O8] |
| Si | ⓘ Opal | SiO2 · nH2O |
| Si | ⓘ Orthoclase | K(AlSi3O8) |
| Si | ⓘ Petalite | LiAl(Si4O10) |
| Si | ⓘ Phenakite | Be2SiO4 |
| Si | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Si | ⓘ Pollucite | (Cs,Na)2(Al2Si4O12) · 2H2O |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Rhodonite | CaMn3Mn[Si5O15] |
| Si | ⓘ Quartz var. Rose Quartz | SiO2 |
| Si | ⓘ Muscovite var. Schernikite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Si | ⓘ Sillimanite | Al2(SiO4)O |
| Si | ⓘ Quartz var. Smoky Quartz | SiO2 |
| Si | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
| Si | ⓘ Spodumene | LiAlSi2O6 |
| Si | ⓘ Spurrite | Ca5(SiO4)2(CO3) |
| Si | ⓘ Staurolite | Fe22+Al9Si4O23(OH) |
| Si | ⓘ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| Si | ⓘ Thorite | Th(SiO4) |
| Si | ⓘ Thorite var. Thorogummite | (Th,U)(SiO4)1-x(OH)4x |
| Si | ⓘ Titanite | CaTiO(SiO4) |
| Si | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| Si | ⓘ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| Si | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| Si | ⓘ Vesuvianite | Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 |
| Si | ⓘ Wollastonite | Ca3(Si3O9) |
| Si | ⓘ Zinnwaldite | |
| Si | ⓘ Zircon | Zr(SiO4) |
| Si | ⓘ Zoisite | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
| Si | ⓘ Albite var. Peristerite | Na(AlSi3O8) |
| Si | ⓘ Quartz var. Rock Crystal | SiO2 |
| Si | ⓘ Quartz var. Milky Quartz | SiO2 |
| Si | ⓘ Beryl var. Heliodor | Be3Al2(Si6O18) |
| Si | ⓘ Zircon var. Cyrtolite | Zr[(SiO4),(OH)4] |
| Si | ⓘ Beryl var. Goshenite | Be3Al2(Si6O18) |
| Si | ⓘ Albite var. Cleavelandite | Na(AlSi3O8) |
| Si | ⓘ Hornblende Root Name Group | ◻Ca2(C42+C3+)(AlSi7O22)W2 |
| Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
| Si | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| Si | ⓘ Allanite Group | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
| P | Phosphorus | |
| P | ⓘ Amblygonite | LiAl(PO4)F |
| P | ⓘ Autunite | Ca(UO2)2(PO4)2 · 10-12H2O |
| P | ⓘ Augelite | Al2(PO4)(OH)3 |
| P | ⓘ Brazilianite | NaAl3(PO4)2(OH)4 |
| P | ⓘ Crandallite | CaAl3(PO4)(PO3OH)(OH)6 |
| P | ⓘ Dickinsonite-(KMnNa) | (KNa)(Mn2+◻)Ca(Na2Na)Mn132+Al(PO4)11(PO4)(OH)2 |
| P | ⓘ Eosphorite | Mn2+Al(PO4)(OH)2 · H2O |
| P | ⓘ Fairfieldite | Ca2Mn2+(PO4)2 · 2H2O |
| P | ⓘ Fluorapatite | Ca5(PO4)3F |
| P | ⓘ Heterosite | Fe3+(PO4) |
| P | ⓘ Hureaulite | Mn52+(PO3OH)2(PO4)2 · 4H2O |
| P | ⓘ Hydroxylherderite | CaBe(PO4)(OH) |
| P | ⓘ Hydroxylapatite | Ca5(PO4)3(OH) |
| P | ⓘ Lacroixite | NaAl(PO4)F |
| P | ⓘ Lithiophilite | LiMn2+PO4 |
| P | ⓘ Fluorapatite var. Manganese-bearing Fluorapatite | (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH) |
| P | ⓘ Meta-autunite | Ca(UO2)2(PO4)2 · 6H2O |
| P | ⓘ Metatorbernite | Cu(UO2)2(PO4)2 · 8H2O |
| P | ⓘ Mitridatite | Ca2Fe33+(PO4)3O2 · 3H2O |
| P | ⓘ Monazite Group | REE(PO4) |
| P | ⓘ Monazite-(Ce) | Ce(PO4) |
| P | ⓘ Montebrasite | LiAl(PO4)(OH) |
| P | ⓘ Moraesite | Be2(PO4)(OH) · 4H2O |
| P | ⓘ Morinite | NaCa2Al2(PO4)2(OH)F4 · 2H2O |
| P | ⓘ Natrophilite | NaMn2+PO4 |
| P | ⓘ Parsonsite | Pb2(UO2)(PO4)2 |
| P | ⓘ Phosphuranylite | KCa(H3O)3(UO2)7(PO4)4O4 · 8H2O |
| P | ⓘ Planerite | Al6(PO4)2(PO3OH)2(OH)8 · 4H2O |
| P | ⓘ Purpurite | Mn3+(PO4) |
| P | ⓘ Reddingite | (Mn2+,Fe2+)3(PO4)2 · 3H2O |
| P | ⓘ Lithiophilite var. Sicklerite | Li1-x(Mnx3+Mn2+1-x)PO4 |
| P | ⓘ Stewartite | Mn2+Fe23+(PO4)2(OH)2 · 8H2O |
| P | ⓘ Torbernite | Cu(UO2)2(PO4)2 · 12H2O |
| P | ⓘ Triphylite | LiFe2+PO4 |
| P | ⓘ Triplite | Mn22+(PO4)F |
| P | ⓘ Vivianite | Fe2+Fe22+(PO4)2 · 8H2O |
| P | ⓘ Wardite | NaAl3(PO4)2(OH)4 · 2H2O |
| P | ⓘ Xenotime-(Y) | Y(PO4) |
| S | Sulfur | |
| S | ⓘ Anglesite | PbSO4 |
| S | ⓘ Arsenopyrite | FeAsS |
| S | ⓘ Bismuthinite | Bi2S3 |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Cuprobismutite | Cu8AgBi13S24 |
| S | ⓘ Epsomite | MgSO4 · 7H2O |
| S | ⓘ Galena | PbS |
| S | ⓘ Goslarite | ZnSO4 · 7H2O |
| S | ⓘ Greenockite | CdS |
| S | ⓘ Gypsum | CaSO4 · 2H2O |
| S | ⓘ Hexahydrite | Mg(H2O)6(SO4) |
| S | ⓘ Melanterite | Fe2+(H2O)6(SO4) · H2O |
| S | ⓘ Molybdenite | MoS2 |
| S | ⓘ Pickeringite | MgAl2(SO4)4 · 22H2O |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Pyrrhotite | Fe1-xS |
| S | ⓘ Sphalerite | ZnS |
| S | ⓘ Native Sulphur | S8 |
| S | ⓘ Wurtzite var. Voltzite | (Zn,Fe,Mn) S [with O C H ] |
| S | ⓘ Wurtzite | (Zn,Fe)S |
| Cl | Chlorine | |
| Cl | ⓘ Fluorapatite var. Manganese-bearing Fluorapatite | (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH) |
| K | Potassium | |
| K | ⓘ K Feldspar var. Adularia | KAlSi3O8 |
| K | ⓘ Microcline var. Amazonite | K(AlSi3O8) |
| K | ⓘ Annite | KFe32+(AlSi3O10)(OH)2 |
| K | ⓘ Dickinsonite-(KMnNa) | (KNa)(Mn2+◻)Ca(Na2Na)Mn132+Al(PO4)11(PO4)(OH)2 |
| K | ⓘ Masutomilite | K(LiAlMn2+)[AlSi3O10]F2 |
| K | ⓘ Microcline | K(AlSi3O8) |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | ⓘ Orthoclase | K(AlSi3O8) |
| K | ⓘ Phosphuranylite | KCa(H3O)3(UO2)7(PO4)4O4 · 8H2O |
| K | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| K | ⓘ Muscovite var. Schernikite | KAl2(AlSi3O10)(OH)2 |
| K | ⓘ Zinnwaldite | |
| Ca | Calcium | |
| Ca | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Ca | ⓘ Allanite-(Ce) | (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH) |
| Ca | ⓘ Anorthite | Ca(Al2Si2O8) |
| Ca | ⓘ Aragonite | CaCO3 |
| Ca | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Ca | ⓘ Autunite | Ca(UO2)2(PO4)2 · 10-12H2O |
| Ca | ⓘ Bavenite | Ca4Be2Al2Si9O26(OH)2 |
| Ca | ⓘ Bityite | CaLiAl2(AlBeSi2O10)(OH)2 |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Clinozoisite | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
| Ca | ⓘ Crandallite | CaAl3(PO4)(PO3OH)(OH)6 |
| Ca | ⓘ Dickinsonite-(KMnNa) | (KNa)(Mn2+◻)Ca(Na2Na)Mn132+Al(PO4)11(PO4)(OH)2 |
| Ca | ⓘ Diopside | CaMgSi2O6 |
| Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Ca | ⓘ Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| Ca | ⓘ Fairfieldite | Ca2Mn2+(PO4)2 · 2H2O |
| Ca | ⓘ Fluorapatite | Ca5(PO4)3F |
| Ca | ⓘ Fluorite | CaF2 |
| Ca | ⓘ Gehlenite | Ca2Al[AlSiO7] |
| Ca | ⓘ Grossular | Ca3Al2(SiO4)3 |
| Ca | ⓘ Gypsum | CaSO4 · 2H2O |
| Ca | ⓘ Hydroxylherderite | CaBe(PO4)(OH) |
| Ca | ⓘ Hydroxylapatite | Ca5(PO4)3(OH) |
| Ca | ⓘ Larnite | Ca2SiO4 |
| Ca | ⓘ Magnesio-hornblende | ◻Ca2(Mg4Al)(Si7Al)O22(OH)2 |
| Ca | ⓘ Fluorapatite var. Manganese-bearing Fluorapatite | (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH) |
| Ca | ⓘ Meta-autunite | Ca(UO2)2(PO4)2 · 6H2O |
| Ca | ⓘ Mitridatite | Ca2Fe33+(PO4)3O2 · 3H2O |
| Ca | ⓘ Morinite | NaCa2Al2(PO4)2(OH)F4 · 2H2O |
| Ca | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Ca | ⓘ Albite var. Oligoclase | (Na,Ca)[Al(Si,Al)Si2O8] |
| Ca | ⓘ Phosphuranylite | KCa(H3O)3(UO2)7(PO4)4O4 · 8H2O |
| Ca | ⓘ Rhodonite | CaMn3Mn[Si5O15] |
| Ca | ⓘ Scheelite | Ca(WO4) |
| Ca | ⓘ Spurrite | Ca5(SiO4)2(CO3) |
| Ca | ⓘ Titanite | CaTiO(SiO4) |
| Ca | ⓘ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| Ca | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| Ca | ⓘ Pyrochlore Group var. Uranpyrochlore (of Hogarth 1977) | (Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F) |
| Ca | ⓘ Vesuvianite | Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 |
| Ca | ⓘ Wollastonite | Ca3(Si3O9) |
| Ca | ⓘ Zoisite | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
| Ca | ⓘ Hornblende Root Name Group | ◻Ca2(C42+C3+)(AlSi7O22)W2 |
| Ca | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| Sc | Scandium | |
| Sc | ⓘ Bazzite | Be3Sc2(Si6O18) |
| Ti | Titanium | |
| Ti | ⓘ Anatase | TiO2 |
| Ti | ⓘ Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| Ti | ⓘ Ilmenite | Fe2+TiO3 |
| Ti | ⓘ Rutile | TiO2 |
| Ti | ⓘ Titanite | CaTiO(SiO4) |
| Ti | ⓘ Pyrochlore Group var. Uranpyrochlore (of Hogarth 1977) | (Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F) |
| Ti | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| Mn | Manganese | |
| Mn | ⓘ Dickinsonite-(KMnNa) | (KNa)(Mn2+◻)Ca(Na2Na)Mn132+Al(PO4)11(PO4)(OH)2 |
| Mn | ⓘ Eosphorite | Mn2+Al(PO4)(OH)2 · H2O |
| Mn | ⓘ Fairfieldite | Ca2Mn2+(PO4)2 · 2H2O |
| Mn | ⓘ Groutite | Mn3+O(OH) |
| Mn | ⓘ Hureaulite | Mn52+(PO3OH)2(PO4)2 · 4H2O |
| Mn | ⓘ Lithiophilite | LiMn2+PO4 |
| Mn | ⓘ Manganite | Mn3+O(OH) |
| Mn | ⓘ Columbite-(Mn) | Mn2+Nb2O6 |
| Mn | ⓘ Tantalite-(Mn) | Mn2+Ta2O6 |
| Mn | ⓘ Fluorapatite var. Manganese-bearing Fluorapatite | (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH) |
| Mn | ⓘ Masutomilite | K(LiAlMn2+)[AlSi3O10]F2 |
| Mn | ⓘ Natrophilite | NaMn2+PO4 |
| Mn | ⓘ Purpurite | Mn3+(PO4) |
| Mn | ⓘ Pyrolusite | Mn4+O2 |
| Mn | ⓘ Reddingite | (Mn2+,Fe2+)3(PO4)2 · 3H2O |
| Mn | ⓘ Rhodochrosite | MnCO3 |
| Mn | ⓘ Rhodonite | CaMn3Mn[Si5O15] |
| Mn | ⓘ Lithiophilite var. Sicklerite | Li1-x(Mnx3+Mn2+1-x)PO4 |
| Mn | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
| Mn | ⓘ Stewartite | Mn2+Fe23+(PO4)2(OH)2 · 8H2O |
| Mn | ⓘ Tantalite | (Mn,Fe)(Ta,Nb)2O6 |
| Mn | ⓘ Tapiolite | (Fe,Mn)(Ta,Nb)2O6 |
| Mn | ⓘ Triplite | Mn22+(PO4)F |
| Mn | ⓘ Wurtzite var. Voltzite | (Zn,Fe,Mn) S [with O C H ] |
| Mn | ⓘ Wodginite | Mn2+Sn4+Ta2O8 |
| Mn | ⓘ Columbite-(Fe)-Columbite-(Mn) Series | |
| Fe | Iron | |
| Fe | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Fe | ⓘ Allanite-(Ce) | (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH) |
| Fe | ⓘ Annite | KFe32+(AlSi3O10)(OH)2 |
| Fe | ⓘ Arsenopyrite | FeAsS |
| Fe | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Fe | ⓘ Almandine | Fe32+Al2(SiO4)3 |
| Fe | ⓘ Bismutoferrite | Fe23+Bi(SiO4)2(OH) |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | ⓘ Ferrimolybdite | Fe2(MoO4)3 · nH2O |
| Fe | ⓘ Columbite-(Fe) | Fe2+Nb2O6 |
| Fe | ⓘ Foitite | ◻(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3(OH) |
| Fe | ⓘ Goethite | Fe3+O(OH) |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Heterosite | Fe3+(PO4) |
| Fe | ⓘ Ilmenite | Fe2+TiO3 |
| Fe | ⓘ Ishikawaite | U4+Fe2+Nb2O8 |
| Fe | ⓘ Löllingite | FeAs2 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Melanterite | Fe2+(H2O)6(SO4) · H2O |
| Fe | ⓘ Mitridatite | Ca2Fe33+(PO4)3O2 · 3H2O |
| Fe | ⓘ Petscheckite | UFe(Nb,Ta)2O8 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Pyrrhotite | Fe1-xS |
| Fe | ⓘ Reddingite | (Mn2+,Fe2+)3(PO4)2 · 3H2O |
| Fe | ⓘ Samarskite-(Y) | YFe3+Nb2O8 |
| Fe | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Fe | ⓘ Scorodite | Fe3+AsO4 · 2H2O |
| Fe | ⓘ Siderite | FeCO3 |
| Fe | ⓘ Staurolite | Fe22+Al9Si4O23(OH) |
| Fe | ⓘ Stewartite | Mn2+Fe23+(PO4)2(OH)2 · 8H2O |
| Fe | ⓘ Tantalite | (Mn,Fe)(Ta,Nb)2O6 |
| Fe | ⓘ Tapiolite | (Fe,Mn)(Ta,Nb)2O6 |
| Fe | ⓘ Triphylite | LiFe2+PO4 |
| Fe | ⓘ Vivianite | Fe2+Fe22+(PO4)2 · 8H2O |
| Fe | ⓘ Wurtzite var. Voltzite | (Zn,Fe,Mn) S [with O C H ] |
| Fe | ⓘ Vesuvianite | Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 |
| Fe | ⓘ Wurtzite | (Zn,Fe)S |
| Fe | ⓘ Zinnwaldite | |
| Fe | ⓘ Columbite-(Fe)-Columbite-(Mn) Series | |
| Fe | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Cuprobismutite | Cu8AgBi13S24 |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
| Cu | ⓘ Metatorbernite | Cu(UO2)2(PO4)2 · 8H2O |
| Cu | ⓘ Torbernite | Cu(UO2)2(PO4)2 · 12H2O |
| Zn | Zinc | |
| Zn | ⓘ Gahnite | ZnAl2O4 |
| Zn | ⓘ Goslarite | ZnSO4 · 7H2O |
| Zn | ⓘ Sphalerite | ZnS |
| Zn | ⓘ Wurtzite var. Voltzite | (Zn,Fe,Mn) S [with O C H ] |
| Zn | ⓘ Wurtzite | (Zn,Fe)S |
| As | Arsenic | |
| As | ⓘ Arsenolite | As2O3 |
| As | ⓘ Arsenopyrite | FeAsS |
| As | ⓘ Löllingite | FeAs2 |
| As | ⓘ Scorodite | Fe3+AsO4 · 2H2O |
| Y | Yttrium | |
| Y | ⓘ Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| Y | ⓘ Samarskite-(Y) | YFe3+Nb2O8 |
| Y | ⓘ Xenotime-(Y) | Y(PO4) |
| Zr | Zirconium | |
| Zr | ⓘ Zircon | Zr(SiO4) |
| Zr | ⓘ Zircon var. Cyrtolite | Zr[(SiO4),(OH)4] |
| Nb | Niobium | |
| Nb | ⓘ Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| Nb | ⓘ Columbite-(Fe) | Fe2+Nb2O6 |
| Nb | ⓘ Ishikawaite | U4+Fe2+Nb2O8 |
| Nb | ⓘ Liandratite | U(Nb,Ta)2O8 |
| Nb | ⓘ Columbite-(Mn) | Mn2+Nb2O6 |
| Nb | ⓘ Petscheckite | UFe(Nb,Ta)2O8 |
| Nb | ⓘ Pyrochlore Group | A2Nb2(O,OH)6Z |
| Nb | ⓘ Samarskite-(Y) | YFe3+Nb2O8 |
| Nb | ⓘ Tantalite | (Mn,Fe)(Ta,Nb)2O6 |
| Nb | ⓘ Tapiolite | (Fe,Mn)(Ta,Nb)2O6 |
| Nb | ⓘ Pyrochlore Group var. Uranpyrochlore (of Hogarth 1977) | (Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F) |
| Nb | ⓘ Columbite-(Fe)-Columbite-(Mn) Series | |
| Mo | Molybdenum | |
| Mo | ⓘ Ferrimolybdite | Fe2(MoO4)3 · nH2O |
| Mo | ⓘ Molybdenite | MoS2 |
| Ag | Silver | |
| Ag | ⓘ Cuprobismutite | Cu8AgBi13S24 |
| Cd | Cadmium | |
| Cd | ⓘ Greenockite | CdS |
| Sn | Tin | |
| Sn | ⓘ Cassiterite | SnO2 |
| Sn | ⓘ Wodginite | Mn2+Sn4+Ta2O8 |
| Cs | Caesium | |
| Cs | ⓘ Pollucite | (Cs,Na)2(Al2Si4O12) · 2H2O |
| Ce | Cerium | |
| Ce | ⓘ Allanite-(Ce) | (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH) |
| Ce | ⓘ Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| Ce | ⓘ Monazite-(Ce) | Ce(PO4) |
| Ce | ⓘ Pyrochlore Group var. Uranpyrochlore (of Hogarth 1977) | (Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F) |
| Ta | Tantalum | |
| Ta | ⓘ Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| Ta | ⓘ Liandratite | U(Nb,Ta)2O8 |
| Ta | ⓘ Tantalite-(Mn) | Mn2+Ta2O6 |
| Ta | ⓘ Microlite Group | A2-mTa2X6-wZ1-n |
| Ta | ⓘ Petscheckite | UFe(Nb,Ta)2O8 |
| Ta | ⓘ Tantalite | (Mn,Fe)(Ta,Nb)2O6 |
| Ta | ⓘ Tapiolite | (Fe,Mn)(Ta,Nb)2O6 |
| Ta | ⓘ Pyrochlore Group var. Uranpyrochlore (of Hogarth 1977) | (Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F) |
| Ta | ⓘ Wodginite | Mn2+Sn4+Ta2O8 |
| W | Tungsten | |
| W | ⓘ Scheelite | Ca(WO4) |
| Pb | Lead | |
| Pb | ⓘ Anglesite | PbSO4 |
| Pb | ⓘ Galena | PbS |
| Pb | ⓘ Parsonsite | Pb2(UO2)(PO4)2 |
| Bi | Bismuth | |
| Bi | ⓘ Bismutoferrite | Fe23+Bi(SiO4)2(OH) |
| Bi | ⓘ Bismite | Bi2O3 |
| Bi | ⓘ Bismuthinite | Bi2S3 |
| Bi | ⓘ Bismutite | (BiO)2CO3 |
| Bi | ⓘ Cuprobismutite | Cu8AgBi13S24 |
| Th | Thorium | |
| Th | ⓘ Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| Th | ⓘ Thorite | Th(SiO4) |
| Th | ⓘ Thorite var. Thorogummite | (Th,U)(SiO4)1-x(OH)4x |
| U | Uranium | |
| U | ⓘ Autunite | Ca(UO2)2(PO4)2 · 10-12H2O |
| U | ⓘ Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| U | ⓘ Ishikawaite | U4+Fe2+Nb2O8 |
| U | ⓘ Liandratite | U(Nb,Ta)2O8 |
| U | ⓘ Meta-autunite | Ca(UO2)2(PO4)2 · 6H2O |
| U | ⓘ Metatorbernite | Cu(UO2)2(PO4)2 · 8H2O |
| U | ⓘ Parsonsite | Pb2(UO2)(PO4)2 |
| U | ⓘ Petscheckite | UFe(Nb,Ta)2O8 |
| U | ⓘ Phosphuranylite | KCa(H3O)3(UO2)7(PO4)4O4 · 8H2O |
| U | ⓘ Thorite var. Thorogummite | (Th,U)(SiO4)1-x(OH)4x |
| U | ⓘ Torbernite | Cu(UO2)2(PO4)2 · 12H2O |
| U | ⓘ Uraninite | UO2 |
| U | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| U | ⓘ Pyrochlore Group var. Uranpyrochlore (of Hogarth 1977) | (Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F) |
Fossils
There are 13 fossil localities from the PaleoBioDB database within this region.These data are provided on an experimental basis and are taken from external databases. Mindat.org has no control currently over the accuracy of these data.
| Occurrences | 13 | ||||||
|---|---|---|---|---|---|---|---|
| Youngest Fossil Listed | 191 Ma (Early Jurassic) | ||||||
| Oldest Fossil Listed | 201 Ma (Early Jurassic) | ||||||
| Stratigraphic Units |
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| Fossils from Region | Click here to show the list. | ||||||
| Fossil Localities | Click to show 2 fossil localities |
Other Databases
| Wikipedia: | https://en.wikipedia.org/wiki/Portland,_Connecticut |
|---|---|
| Wikidata ID: | Q753876 |
| GeoNames ID: | 4841012 |
Localities in this Region
- Connecticut
- Middlesex County
- Connecticut
- Middlesex County
- Portland
- Middlesex County
Other Regions, Features and Areas that Intersect
North AmericaContinent
North America PlateTectonic Plate
- Ganderia DomainDomain
- GranderiaPassive Margin
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References
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Portland, Middlesex County, Connecticut, USA