Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USAi
| Regional Level Types | |
|---|---|
| Strickland pegmatite | Pegmatite (Dormant) |
| Collins Hill | Hill |
| Portland | Town |
| Middlesex County | County |
| Connecticut | State |
| USA | Country |
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Latitude & Longitude (WGS84):
41° 35' 33'' North , 72° 35' 30'' West
Latitude & Longitude (decimal):
Type:
Pegmatite (Dormant) - last checked 2017
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Cromwell | 13,750 (2017) | 4.5km |
| Portland | 5,862 (2017) | 4.6km |
| Middletown | 46,756 (2017) | 5.9km |
| Lake Pocotopaug | 3,436 (2017) | 6.8km |
| East Hampton | 2,691 (2017) | 7.6km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Lapidary and Mineral Society of Central Connecticut | Meriden, Connecticut | 19km |
| Bristol Gem & Mineral Club | Bristol, Connecticut | 31km |
| New Haven Mineral Club | New Haven, Connecticut | 42km |
Other/historical names associated with this locality:
Strickland-Cramer Quarry; Strickland-Cramer Mine; Strickland-Cramer Feldspar-Mica Quarries
A large lithium-rich granite pegmatite worked by both the Strickland (Eureka) Quarry and the adjacent but unconnected, underground Schoonmaker (Cramer) Mine. The large, northernmost dump was waste from the Schoonmaker Mine, while the other dumps surrounding the open quarry were waste from the Strickland Quarry (which also had some underground mining as well). Because most collectors did not realize the northern dump belonged to a different operation, most specimens are referred to as coming from the better-known Strickland Quarry no matter where collected. The difference is largely academic anyway because all the minerals came from the same pegmatite and the mineralogy, pegmatite zoning, and host rocks of the Strickland Quarry and Schoonmaker Mine are similar. Any specimen can be generically attributed to the Strickland pegmatite. See these sublocalities for details.
Robinson et al (1992) page 424 mention a report by Tony Albini that during the development of the golf course, owner Joe Kelly permitted collecting and provide a list of minerals found then. The bulldozed dumps would have been from both the quarry and the mine.
The mineral list includes those from the pegmatite, host rock and post-mine weathering deposits.
Located in the Middletown Pegmatite District comprising a swarm of Permian (~260 mya) pegmatite dikes; locally in a north-trending zone, mostly in the Ordovician Collins Hill Formation; but dikes are also present in eastward adjacent Ordovician Glastonbury Gneiss and westward adjacent Ordovician Middletown Formation.
Robinson et al (1992) page 424 mention a report by Tony Albini that during the development of the golf course, owner Joe Kelly permitted collecting and provide a list of minerals found then. The bulldozed dumps would have been from both the quarry and the mine.
The mineral list includes those from the pegmatite, host rock and post-mine weathering deposits.
Located in the Middletown Pegmatite District comprising a swarm of Permian (~260 mya) pegmatite dikes; locally in a north-trending zone, mostly in the Ordovician Collins Hill Formation; but dikes are also present in eastward adjacent Ordovician Glastonbury Gneiss and westward adjacent Ordovician Middletown Formation.
Select Mineral List Type
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-localities118 valid minerals. 17 erroneous literature entries.
Rock Types Recorded
Rock list contains entries from the region specified including sub-localities
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Actinolite Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| ⓘ Albite Formula: Na(AlSi3O8) Localities: 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. |
| ⓘ Formula: (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH) Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA - erroneously reported Description: Only a generic mention of occurring in the pegmatites of Portland, Schooner (1955) just mentions Schairer and says he "has not observed it at the locality." |
| ⓘ Almandine Formula: Fe2+3Al2(SiO4)3 Localities: 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: Habit: tabular to bladed Colour: black Description: fka biotite, mostly in the outer zones, can be interlaminated with muscovite and partly altered to chlorite.
Zodac (1937) gives this summary:
One interesting specimen penetrating muscovite, on albite, was collected. Associated with the albite was smoky quartz. Small biotite plates, fair in quality, were found imbedded in large plates of muscovite. Minute flakes of biotite are dis¬seminated in muscovite sheets. Large black plates, of good quality, and imbedded in muscovite, were also found. One specimen of muscovite, 3x4 inches in size, had a biotite crystal 1 ¾ x 3 inches in size, imbedded in it in such a way that the muscovite was present only as narrow strips on the biotite’s two long edges. In some parts of the quarry biotite is very plentiful. The south end of the open part of the quarry had to be abandoned because there was so much biotite in the spar. The old dump (No. 1) contains a lot of biotite. |
| ⓘ 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 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Description: Schooner (1955): "crystals, of the finest quality, though of small size, are rarely collected from the pegmatite at the Strickland Quarry. The author has several specimens, showing the mineral in a variety of matrices, and he saw the remains of a 1 inch crystal, in the wall of the aforementioned cut." Schooner (circa 1985): "Excellent little crystals are rarely found at the Strickland quarry, either isolated or with sphalerite and pyrite. A few 1/2 inch rough crystals were embedded in the interior of a large pseudomorph of muscovite after schorl." |
| ⓘ 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 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: tabular flakes, coatings Colour: pale yellow Fluorescence: bright green Description: Should be referred to as meta-autunite as all such material is dehydrated. Associated with uraninite and uranophane. |
| ⓘ 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: Habit: hexagonal prisms with pinacoids Colour: pale green Description: Large rough masses, plenty of ore grade material, less commonly as subhedral to euhedral hexagonal crystals in matrix. |
| ⓘ Beryl var. Aquamarine Localities: 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. Heliodor Formula: Be3Al2(Si6O18) Localities: Habit: massive to subhedral hexagonal crystals Colour: yellow |
| ⓘ 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." |
| ⓘ Formula: Bi2O3 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA - erroneously reported Description: Schooner (1955) only says it was reported "many years ago". With no bismuthinite present its presence is dubious or confusion with specimens from the nearby older Pelton Quarry. |
| ⓘ Formula: Bi2S3 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA - erroneously reported Description: "Not seen" by Schooner (1955). Schairer (1931) seems to be the source of all later repetition, and he said it was found "very rarely" in Portland. This generic reference probably means the much older Pelton Quarry where it is well known. |
| ⓘ Formula: (BiO)2CO3 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA - erroneously reported Description: Early references such as Schairer (1931) only attribute the mineral to "Portland" and this could easily mean the older Pelton Quarry where it is known. Schooner (1958) says: "The Wesleyan University collection...contains a solid two inch mass of the mineral from Portland. The exact source may have been the Strickland Quarry, though it is not specified on the label". Nope, that piece is from the Pelton Quarry as described in Wells, H. L. (1887), Bismutosphaerite from Willimantic and Portland. American Journal of Science: s. 3, 34: 271-4. References: |
| ⓘ 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 |
| ⓘ Cassiterite Formula: SnO2 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: twinned bipyramids Colour: deep red-black to dark brown Description: Tiny, dark, lustrous, sharp crystals typically embedded in lepidolite or spodumene with K-rich albite. Can easily be confused with tantalite-(Mn) or wodginite, though these minerals are differentiated from it by their strong iridescence. |
| ⓘ Chalcopyrite Formula: CuFeS2 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: massive Description: usually intergrown with pyrrhotite in quartz veins in the Collins Hill Formation, but it is seldom seen as more than traces |
| ⓘ '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 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: tabular to elongated prisms Colour: black with yellow, blue to purple iridescence Description: As small pocket crystals to large subhedral masses in the intermediate plagioclase-quartz mineralized zone. Schooner (1958): "innumerable specimens, including well developed crystals up to three or four inches across; heavy aggregates of parallel tabular crystals in cleavelandite were abundant when the locality was active in 1953." |
| ⓘ 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: |
| ✪ 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 |
| ⓘ 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. |
| ⓘ 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. |
| ⓘ 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. |
| ⓘ Fluorapatite Formula: Ca5(PO4)3F Localities: 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) Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA 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 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Description: Schooner (circa 1985) reports that "Rudolf Bartsch, in his 'New England Notes', 'Rocks and Minerals' magazine, somewhere around 1940, described a large specimen of lepidolite studded with green crystals of gahnite. It is well to remember, however, that green microlite also occurs there in lepidolite." Considering the lack of confirmed specimens, they are likely microlite. |
| ⓘ 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." |
| ⓘ 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) Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: earthy crusts Colour: dark brown Description: In pockets in secondary K-rich albite encrusting other associated minerals and pseudomorphing pyrite, from which it is probably derived. |
| ⓘ 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 |
| ⓘ 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 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: crusts of microcrystals Colour: white to gray Description: Schooner (1958) reports it as clusters of very delicate white or gray crystals on protected ledges of schist and gneiss. References: |
| ⓘ Formula: Al2Si2O5(OH)4 · n(H2O) 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 Walden Gem Quarry in Portland. Schooner makes no mention if it from Strickland in his various comprehensive publications, especially his last, Schooner (circa 1985). |
| ⓘ Hematite Formula: Fe2O3 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA 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". |
| ⓘ 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 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Description: Zodac (1937) reports it as occurring as "Black plates along contact of white albite and grayish microcline." This is an odd, very questionable occurrence and later in the same document, he describes "smoky quartz...which had through its center a minutely thin vein of black tourmaline resembling a thin plate of ilmenite", which makes one wonder about the other piece. Schooner does not describe any other specimens. |
| ⓘ 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 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA 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: tabular books, micaceous to globular Colour: purple Description: Common associated minerals are cleavelandite, quartz, spodumene, montebrasite, elbaite, microlite, cassiterite. Usually granular, but books to a few inches across occur. |
| ⓘ 'Limonite' Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: crusts and coatings Colour: brown Description: stains or coatings on other minerals |
| ⓘ 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 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: micro inclusions in mica Colour: black Description: Magnetite inclusions are present in many mica books, especially in mica from the part of the wall zone along the footwall. References: |
| ⓘ 'Manganese Oxides' Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: dendritic encrustations Colour: black References: |
| ⓘ 'Manganese Oxides var. Manganese Dendrites' Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: dendritic encrustations Colour: black References: |
| ⓘ Formula: Mn3+O(OH) Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA - erroneously reported Description: Speculation by Schooner (1958). Black crusts associated with altered lithiophilite are groutite. References: |
| ⓘ Masutomilite Formula: K(LiAlMn2+)[AlSi3O10]F2 |
| ⓘ Melanterite Formula: Fe2+(H2O)6(SO4) · H2O Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, 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 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: tabular flakes Colour: pale yellow Fluorescence: bright green Description: Forming thin, sometimes invisible crusts (detected by their bright green SW and LW UV fluorescence) around altered uraninite, with yellow uranophane. |
| ⓘ Metatorbernite ? Formula: Cu(UO2)2(PO4)2 · 8H2O Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Description: Schooner (1955) states only that it has been reported. Details and specimens lacking. Though certainly possible, examined specimens of alterations around uraninite show uranophane and meta-autunite but no green metatorbernite. |
| ⓘ Microcline Formula: K(AlSi3O8) |
| ⓘ 'Microlite Group' Formula: A2-mTa2X6-wZ1-n Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: dodecahedral often with octahedral and cubic forms Colour: black, honey brown, dark green, yellow-green Description: Crystals typically up to a few mm, mostly as broken black crystals in lepidolite and cleavelandite, yellow crystals are rarely embedded in tantalite. Zoned crystals are common, wherein yellow and black sectors are sharply divided. Like most regional microlite, they are radioactive. |
| ⓘ 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 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: tabular hexagonal to anhedral scales Colour: silvery metallic Description: Sharp little crystals to 1/2-inch, shapeless scales, "foil-like wads" in vein quartz with pyrrhotite and chalcopyrite in the host metamorphic rocks or in marginal pegmatite. |
| ⓘ Monazite-(Ce) Formula: Ce(PO4) Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Colour: brown Description: Brown crystals to nearly an inch are rarely intergrown with small columbite crystals and fluorapatite. |
| ⓘ 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 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: earthy Colour: pink Description: As crumbly, soft, pink masses where spodumene has decomposed. |
| ⓘ 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: Habit: tabular, waxy secondary replacement of gemmy almandine Colour: yellowish-green to pale brown Description: According to Cameron et al (1954), in the albite-quartz-muscovite wall zone muscovite forms books 2 inches to 6 feet broad and ½ to 12 inches thick. These were heavily mined in the early 1940s. Smaller crystals occur in the other zones, except the quartz core. The output of the Schoonmaker mine and Strickland Quarry places the Strickland pegmatite among the most productive mica pegmatites in the country with a total yield estimated at more than 4,500 tons of mine-run mica. Waxy, yellow fine-grained replacement of gemmy almandine (both confirmed by Raman spectroscopy at the University of New Haven) showing included, remnant, etched pieces of the garnet. |
| ⓘ 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 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: efflorescence on pyrite or pyrrhotite Description: Schooner (1958): "as a powdery incrustation on decomposing pyrite and pyrrhotite. A bottled specimen from the Strickland Quarry in Portland, in the author’s collection, shows a piece of albite and drusy pyrite coated with microcrystallized yellow sulfur and fragile gray melanterite efflorescences." References: |
| ⓘ '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 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: coatings, bubbly crusts Colour: colorless to pale green Fluorescence: bright green Description: Typically as thin coatings only easily visible under SW UV light. Minor clear, bubbly crusts occur in secondary mineralizations. |
| ⓘ Opal var. Opal-AN Formula: SiO2 · nH2O Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: coatings, bubbly crusts Colour: colorless to pale green Fluorescence: bright green Description: Typically as thin coatings only easily visible under SW UV light. Minor clear, bubbly crusts occur in secondary mineralizations. |
| ⓘ 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) Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: granular to cleavable masses Colour: pale grey to white Description: Schooner (1958) says: "sparingly associated with the pollucite which the author discovered at the Strickland Quarry in Portland in l954. It was in the form of glassy white or colorless cleavages and coarsely crystalline aggregates." Later, in Schooner (circa 1985), he elaborates: "Good specimens of white petalite, closely associated with colorless pollucite, were collected deep in the Strickland quarry, in the early 1950s. The author appears to have the only such material. It is usually granular, so the perfect cleavage is not as conspicuous as might be expected. The petalite was verified by X-ray diffraction. Similar petalite has been found on the dumps, intergrown with spodumene; the spodumene may be thoroughly altered to 'pinite', whereas the petalite, being much more stable, is in a fresh condition." References: |
| ⓘ 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: |
| ⓘ 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 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: massive, granular Colour: colorless to pale grey Description: Schooner (1958) discovered it in l954. "He obtained specimens of glassy material, up to well over a foot across, from a wedge-shaped vein of alkaline minerals which had been exposed by quarrying and subsequently developed by a number of collectors… who threw the pollucite aside, in the belief that it was quartz. The author himself was deceived by this material for a while, even though he had been diligently searching for the mineral in the area. The pollucite, not previously reported from Connecticut, was intimately associated with petalite, spodumene, pink and green tourmaline, amblygonite [montebrasite], cleavelandite, lepidolite, and quartz. Two or three masses had been completely altered to a clay which became waxy on drying, but most of the pollucite was fresh and had a high cesium content." References: |
| ⓘ 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: 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. |
| ⓘ ' Formula: A2Nb2(O,OH)6Z Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA - erroneously reported Description: Speculation by Schooner. References: |
| ⓘ Formula: Mn4+O2 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA - erroneously reported 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. See "manganese oxides" for description. |
| ⓘ Pyrrhotite Formula: Fe1-xS Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, 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: 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. 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 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: massive Colour: rosy Description: Not very common, most rosy material turned out to be morganite beryl. References: |
| ⓘ Quartz var. Smoky Quartz Formula: SiO2 Localities: 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 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Description: Schooner says it has been "reported" but details and specimens lacking. |
| ⓘ 'Scapolite' ? |
| ⓘ 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: 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. |
| ⓘ Spessartine Formula: Mn2+3Al2(SiO4)3 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: massive to trapezohedral Colour: orange-red Description: 2017 SEM-EDS analysis of an orange-red crystal in fine-grained greenish muscovite confirms the identification. Orange colored crystals are likely spessartine, however, as there is much almandine and likely both a chemical and color gradation between these two species here, each suspected crystal may need analysis to confirm the identification. |
| ⓘ Sphalerite Formula: ZnS Localities: 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 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Colour: lavender Description: Most spodumene from this pegmatite is not gemmy and much of it is altered or etched to various degrees, although some of the better crystals have translucent, lavender interiors. |
| ⓘ 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) Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: prismatic Colour: dark brown Description: Thumbnail sized crystals in the Collins Hill Schist west of the pegmatite. References: |
| ⓘ 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: |
| ✪ Tantalite-(Mn) Formula: Mn2+Ta2O6 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA 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. |
| ⓘ Titanite Formula: CaTiO(SiO4) Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: micro-crystals Colour: brown Description: Minor accessory in the calc-silicate units of the host Collins Hill Formation. |
| ⓘ Topaz Formula: Al2(SiO4)(F,OH)2 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Colour: white Description: At least one recognizable crystal about 5 cm long was collected by Richard Schooner. Confirmed by Bruce Jarnot, Anthony Albini, and Harold Moritz. Schooner (1958) states that: "There have been reports of topaz...but most evidently refer to the gem quality citrine quartz (the 'topaz' of commerce) which was produced many years ago. Nevertheless, John Tweedy, former operator of the locality, told the author that his company geologist had identified the mineral there in 1953." Later, in Schooner (circa 1985) he says: "Topaz was supposedly verified from the Strickland quarry, at Yale University, a decade ago. It must be quite rare." References: |
| ⓘ 'Tourmaline' Formula: AD3G6(T6O18)(BO3)3X3Z Localities: 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. Rubellite' |
| ⓘ 'Tourmaline var. Verdelite' |
| ⓘ 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: |
| ⓘ 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: Habit: octahedral to irregular grains Colour: black Description: Easily identified by its association with colorful secondary mineralization. Schooner (1955) states that: "crystals, of excellent form, ranging up to a quarter of an inch in diameter were obtained from near the surface of Collins Hill, during the early years [around 1920] of the Strickland Quarry. Wesleyan University, in neighboring Middletown, has many fine specimens. The crystals are octahedral, with cubic modifications." See http://www.mindat.org/photo-626775.html. Columbite-(Fe) and sphalerite were associated. |
| ⓘ Uranophane Formula: Ca(UO2)2(SiO3OH)2 · 5H2O Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: earthy crust, very rare as acicular microcrystals Colour: yellow Description: Alteration of uraninite found in contact with it and immediately around it. Associated with hard to see but very fluorescent meta-autunite found a bit further out from the uraninite. |
| ⓘ Vesuvianite ? Formula: Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Colour: brown Description: Possible component of the calc-silicate units in the host Collins Hill Formation. A single tiny brown potential vesuvianite crystal was noted on a wollastonite(?) specimen. References: |
| ⓘ 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 Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA 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! References: |
| ⓘ 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: Habit: tabular and prismatic Colour: brown Description: "Brown crystals, both tabular and prismatic, are found in close association with little diversely oriented columbite crystals in tan albite. The prismatic crystals resemble zircon...The largest crystal seen was a tabular one, nearly an inch across." Schooner (1958). These sound like potential confusion with wodginite! |
| ⓘ '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) Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA 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] Locality: Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA Habit: short prismatic, parallel groups Colour: brown or black Description: Schooner (1955) says that: "crystals are of small size. Parallel groups are often found in cleavelandite and smoky quartz, and other matrices include manganapatite, microcline, lithiophilite, and various mixtures. The crystals have such short prisms that they resemble distorted dodecahedrons, probably being mistaken for opaque garnets by some collectors." The size rarely exceeds 1/4 inch. |
| ⓘ 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 |
| 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 |
| ⓘ | 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. 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 |
| ⓘ | 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 |
| ⓘ | 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 |
| ⓘ | Bismutite ? | 5.BE.25 | (BiO)2CO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Anglesite ? | 7.AD.35 | PbSO4 |
| ⓘ | 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) |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | 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 |
| ⓘ | 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 |
| ⓘ | Meta-autunite | 8.EB.10 | Ca(UO2)2(PO4)2 · 6H2O |
| ⓘ | Metatorbernite ? | 8.EB.10 | Cu(UO2)2(PO4)2 · 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 |
| ⓘ | Zircon | 9.AD.30 | Zr(SiO4) |
| ⓘ | var. Cyrtolite | 9.AD.30 | Zr[(SiO4),(OH)4] |
| ⓘ | Euclase ? | 9.AE.10 | BeAl(SiO4)(OH) |
| ⓘ | 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) |
| ⓘ | 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) |
| ⓘ | 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) |
| ⓘ | Petalite | 9.EF.05 | LiAl(Si4O10) |
| ⓘ | Microcline | 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. Cleavelandite | 9.FA.35 | Na(AlSi3O8) |
| ⓘ | 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' | - | |
| ⓘ | 'Gummite' | - | |
| ⓘ | 'Lepidolite' | - | |
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Natromontebrasite' | - | |
| ⓘ | 'Tourmaline var. Rubellite' | - | AD3G6(T6O18)(BO3)3X3Z |
| ⓘ | 'Stilbite Subgroup' | - | M6-7[Al8-9Si27-28O72] · nH2O |
| ⓘ | 'Tourmaline' | - | AD3G6(T6O18)(BO3)3X3Z |
| ⓘ | 'var. Verdelite' | - | AD3G6(T6O18)(BO3)3X3Z |
| ⓘ | 'Zinnwaldite' | - | |
| ⓘ | 'Scapolite' ? | - | |
| ⓘ | 'Pinite' | - | |
| ⓘ | 'K Feldspar' | - | |
| ⓘ | 'Manganese Oxides var. Manganese Dendrites' | - | |
| ⓘ | '' | - | |
| ⓘ | 'Columbite-(Mn)-Tantalite-(Mn) Series' | - | |
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 | ⓘ 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 | ⓘ Epsomite | MgSO4 · 7H2O |
| H | ⓘ Euclase | BeAl(SiO4)(OH) |
| H | ⓘ Fairfieldite | Ca2Mn2+(PO4)2 · 2H2O |
| 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 | ⓘ 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 | ⓘ 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 | ⓘ Opal | SiO2 · nH2O |
| 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 | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| H | ⓘ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| H | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| 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] |
| 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 | ⓘ 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) |
| 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. 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 | ⓘ 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 | ⓘ 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 | ⓘ 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 | ⓘ 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 | ⓘ 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 | ⓘ 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 | ⓘ 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 | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| O | ⓘ Spodumene var. Kunzite | LiAlSi2O6 |
| O | ⓘ Kyanite | Al2(SiO4)O |
| O | ⓘ Lacroixite | NaAl(PO4)F |
| O | ⓘ Larnite | Ca2SiO4 |
| 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 | ⓘ 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-(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 | ⓘ 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 | ⓘ 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 | ⓘ 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 | ⓘ Titanite | CaTiO(SiO4) |
| O | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| O | ⓘ Tourmaline | AD3G6(T6O18)(BO3)3X3Z |
| O | ⓘ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| O | ⓘ Triplite | Mn22+(PO4)F |
| O | ⓘ Uraninite | UO2 |
| O | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| 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 | ⓘ 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 | ⓘ Albite var. Cleavelandite | Na(AlSi3O8) |
| O | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| 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 | ⓘ 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 | ⓘ 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. 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 | ⓘ 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 | ⓘ 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 | ⓘ 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 | ⓘ 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 | ⓘ 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 | ⓘ Beryl var. Heliodor | Be3Al2(Si6O18) |
| Al | ⓘ Albite var. Cleavelandite | Na(AlSi3O8) |
| 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 | ⓘ 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 | ⓘ Bityite | CaLiAl2(AlBeSi2O10)(OH)2 |
| Si | ⓘ Beryl | Be3Al2(Si6O18) |
| 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 | ⓘ 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 | ⓘ 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 | ⓘ 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 | ⓘ 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 | ⓘ 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 | ⓘ Albite var. Cleavelandite | Na(AlSi3O8) |
| Si | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| 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 | ⓘ 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-(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 | ⓘ 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 | ⓘ 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 | ⓘ Epsomite | MgSO4 · 7H2O |
| S | ⓘ Galena | PbS |
| S | ⓘ Goslarite | ZnSO4 · 7H2O |
| S | ⓘ Greenockite | CdS |
| S | ⓘ Gypsum | CaSO4 · 2H2O |
| 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 | ⓘ 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 | ⓘ 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 | ⓘ 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 | ⓘ 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 | ⓘ 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 | ⓘ 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 | ⓘ 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 | ⓘ Triplite | Mn22+(PO4)F |
| Mn | ⓘ Wurtzite var. Voltzite | (Zn,Fe,Mn) S [with O C H ] |
| Mn | ⓘ Wodginite | Mn2+Sn4+Ta2O8 |
| 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 | ⓘ Chalcopyrite | CuFeS2 |
| 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 | ⓘ Ilmenite | Fe2+TiO3 |
| Fe | ⓘ Löllingite | FeAs2 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Melanterite | Fe2+(H2O)6(SO4) · H2O |
| Fe | ⓘ Mitridatite | Ca2Fe33+(PO4)3O2 · 3H2O |
| 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 | ⓘ 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 | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Metatorbernite | Cu(UO2)2(PO4)2 · 8H2O |
| 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 | ⓘ Columbite-(Mn) | Mn2+Nb2O6 |
| Nb | ⓘ Pyrochlore Group | A2Nb2(O,OH)6Z |
| Nb | ⓘ Samarskite-(Y) | YFe3+Nb2O8 |
| Mo | Molybdenum | |
| Mo | ⓘ Molybdenite | MoS2 |
| 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) |
| Ta | Tantalum | |
| Ta | ⓘ Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| Ta | ⓘ Tantalite-(Mn) | Mn2+Ta2O6 |
| Ta | ⓘ Microlite Group | A2-mTa2X6-wZ1-n |
| 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 | ⓘ Bismite | Bi2O3 |
| Bi | ⓘ Bismuthinite | Bi2S3 |
| Bi | ⓘ Bismutite | (BiO)2CO3 |
| Th | Thorium | |
| Th | ⓘ Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| U | Uranium | |
| U | ⓘ Autunite | Ca(UO2)2(PO4)2 · 10-12H2O |
| U | ⓘ Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| U | ⓘ Meta-autunite | Ca(UO2)2(PO4)2 · 6H2O |
| U | ⓘ Metatorbernite | Cu(UO2)2(PO4)2 · 8H2O |
| U | ⓘ Parsonsite | Pb2(UO2)(PO4)2 |
| U | ⓘ Uraninite | UO2 |
| U | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
Mindat Articles
Dissolved Bikitaite: Explanation for Hollow, Bladed Inclusions and Epimorphs, Strickland Pegmatite, Portland, Connecticut, USA by Harold MoritzLocalities in this Region
- Connecticut
- Middlesex County
- Portland
- Collins Hill
- Strickland pegmatite
- Collins Hill
- Portland
- Middlesex County
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Ganderia DomainDomain
- GranderiaPassive Margin
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References
Seaman, David W. (1947) Reminiscing On Collins Hill, Portland, Conn. Rocks & Minerals: 22(8): 732-3.
Schooner, Richard (1955) 90 Minerals from 1 Connecticut Hill. Rocks & Minerals, 30 (7-8). 351-358 doi:10.1080/00357529.1955.11767837
Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA