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Tilly Foster Iron Mine, Town of Southeast, Putnam County, New York, USAi
Regional Level Types
Tilly Foster Iron MineMine (Flooded)
Town of SoutheastTown
Putnam CountyCounty
New YorkState
USACountry

This page kindly sponsored by Roger Ericksen
PhotosMapsSearch
Latitude & Longitude (WGS84):
41° 24' 46'' North , 73° 38' 31'' West
Latitude & Longitude (decimal):
Type:
Mine (Flooded) - last checked 2020
Deposit first discovered:
1810
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Brewster2,332 (2017)2.7km
Brewster Hill2,089 (2017)3.4km
Carmel Hamlet6,817 (2017)3.6km
Carmel4,800 (2017)3.7km
Lake Carmel8,282 (2017)5.9km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Danbury Mineralogical SocietyDanbury, Connecticut16km
Mid-Hudson Valley Gem and Mineral Society Inc.Poughkeepsie, New York39km
Stamford Mineralogical SocietyStamford, Connecticut41km
Mindat Locality ID:
4004
Long-form identifier:
mindat:1:2:4004:7
GUID (UUID V4):
0
Other/historical names associated with this locality:
Tilly Foster Mine


A large iron ore (magnetite) deposit was discovered in 1810. Although the mine is a few miles from Brewster, it is actually in the now-defunct hamlet of Tilly Foster, now partly submerged by the Middle Branch Reservoir. The official incorporated name was Tilly Foster Iron Mine. The mine was 600 feet deep in 1879. Mining ceased in 1897 after 13 miners were killed in a rock slide. The articles by Nightingale (2001) provide a historical summary and mineral details, which have been incorporated into the species info pages of this site.

It is famous for its excellent brucite, chondrodite, clinochlore, titanite, and magnetite crystals, and antigorite or lizardite (and other species) pseudomorphs after a wide variety of minerals. Dana (1874), Trainer (various), and Nightingale (2001) provide details. This list below is modified from Januzzi (1976):

antigorite or lizardite after amphiboles, anhydrite, anthophyllite, fluorapatite, biotite, brucite, calcite, chondrodite, olivine, chrysotile, clinochlore, dolomite, enstatite, fluorite, magnetite, muscovite, pectolite, clinoclore, pyrrhotite, scapolite, talc
brucite after dolomite
calcite after chrysotile
dolomite after chondrodite
limonite after biotite
magnetite after chondrodite
magnetite after dolomite
pyrite after pyrrhotite
pyrrhotite after serpentine
talc after amphibole, enstatite

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


92 valid minerals. 2 erroneous literature entries.

Detailed Mineral List:

Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Habit: bladed, acicular, curved aggregates, fibrous
Colour: dark green
Description: Found in bladed and needle-like habits, embedded crystals and massive coarse crystalline aggregates
Albite
Formula: Na(AlSi3O8)
Colour: white to cream
Description: Albite is a component of the gneiss wall rock which is abundant at the mine and is also found in massive form and cleavages. Crystals are small and rare
Albite var. Oligoclase
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Habit: massive
Colour: brown, yellow
Description: Found in brown and yellowish masses
Allanite-(Ce)
Formula: (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)
Habit: elongated, tabular
Colour: black
Description: Allanite has been found in relatively large poorly formed crystals in gneiss, also found in thin tabular-like crystals in hornblende. Occurs in very small crystals in scapolite.
Almandine
Formula: Fe2+3Al2(SiO4)3
Description: Small crude crystals of almandine are found in gneiss
'Amphibole Supergroup'
Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Habit: fibrous
Colour: green
Description: as loose fur-like capillary occurrences
'Amphibole Supergroup var. Byssolite'
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Habit: fibrous
Colour: green
Description: as loose fur-like capillary occurrences
Anhydrite
Formula: CaSO4
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Habit: massive
Colour: grey
Description: A gray mass associated with clinochlore and serpentine, and a brown massive form in gneiss was reported Discredited - Winchell - Trainer actually Magnesite
Antigorite
Formula: Mg3(Si2O5)(OH)4
Habit: massive, also pseudomorphing other minerals
Colour: gray, pale green to gray-green
Description: Serpentine is ubiquitous at Tilly Foster. While early workers tended to refer to serpentine by color, the different colors and habits eventually came to be identified by an extensive, if not cumbersome, assortment of names including: antigorite, bowenite, chrysotile, lizardite, marmolite, picrolite, precious, radiotine, retinalite, and williamsite. Tilly Foster is notable for its abundance and variety of serpentine pseudo-morphs. In addition, massive slickensided serpentine of various colors was readily collected on the dump.
'Apophyllite Group'
Formula: AB4[Si8O20]X · 8H2O
Colour: white to colorless
Description: sharp crystals on fracture surfaces in magnetite-serpentine ore. Reported as small white or colorless crystals in gneiss
Aragonite
Formula: CaCO3
Habit: slender, tapered, radiating groups
Colour: grayish white
Description: Occurs in grayish-white incrustations and as slender, tapered crystals; also radiating groups
Arsenopyrite
Formula: FeAsS
Habit: flattened twins
Colour: steel grey
Description: Reported to occur in groups of steel gray, flattened, twinned crystals
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Habit: prismatic, massive
Description: Reported as prismatic crystals and also massive
Autunite
Formula: Ca(UO2)2(PO4)2 · 10-12H2O
Habit: coatings and minute scales
Colour: yellowish
Description: Two occurrences of yellowish coatings and minute scales on gneiss with typical fluorescence have been reported
Axinite-(Fe)
Formula: Ca2Fe2+Al2BSi4O15OH
Habit: axe-head
Colour: colorless, pale brown, plum
Baryte
Formula: BaSO4
Habit: tabular
Colour: yellow
Description: Small yellow crystals were reported to occur in a cavity in massive chondrodite; also in micro crystals with purple fluorite
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Habit: rosettes, cleavable masses
Colour: black, greenish-black
Description: "Rosettes" were reported to occur in lenses and bands of albite in gneiss Large greenish black masses of this mica have been found exhibiting broad cleavage.
Bornite
Formula: Cu5FeS4
Habit: compact, massive
Colour: reddish-brown
Description: Reported as compact reddish-brown masses
Brochantite
Formula: Cu4(SO4)(OH)6
Habit: encrustation
Colour: blue-green
Description: Identified as transparent, blue-green micro aggregates
Brucite
Formula: Mg(OH)2
Habit: hexagonal tabular or elongated prisms
Colour: pale green, white, grey
Description: Abundant in foliated masses and occasionally found in exceptional crystal groups. Crystallized brucites are Tilly Foster "classics"
Brucite var. Nemalite
Formula: Mg(OH)2
Calcite
Formula: CaCO3
Habit: rhombohedral, scalenohedral
Colour: white
Description: Reported as common in massive form but uncommon in crystals. One of the finest scalenohedral crystal groups was purchased by John Trainer and now resides in the Trainer Collection of the New York State Museum, specimen # 13554. Calcite also is present in rhombohedral form. Fluorescent and phosphorescent forms have been reported
Cerussite
Formula: PbCO3
Habit: encrustation
Colour: gray
Fluorescence: yelow-green
Description: With plumbian scheelite in a cavity in altered galena and encrusting the sample
'Chabazite'
Chalcopyrite
Formula: CuFeS2
Habit: massive
Colour: iridescent
Description: Occurs massive in gneiss; small masses have been reported to be found in pyrrhotite
Chondrodite
Formula: Mg5(SiO4)2F2
Habit: complex, multi-formed
Colour: Deep wine red, orange, red-brown.
Description: World famous sharp, transparent crystals. The Tilly Foster "signature mineral". In 1873 Bridenbaugh described it "as by far the most interesting species found at this locality" (p. 212). E. S. Dana published two detailed papers on the mineral in 1875. In 1938 Trainer described the chondrodite found here as the "finest mineral from Tilly Foster ... The fine crystals are "antiques" for which you pay fancy prices" (p. 297). The deep red crystals found here are unique in their brilliance, clarity, size, perfection, and variety of forms. Various degrees of serpentinization of these crystals are common. It also was abundant in massive form, and in grains within the magnetite ore. Miners referred to "yellow ore" as magnetite with yellow chondrodite; where the chondrodite was altered to serpentine the ore was referred to as "blue ore"
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Description: Minor stains and coatings were reported to have been collected by Ernest Weidhaas in 1931
'Chrysolite'
Description: Reported as abundant although commonly altered to serpentine
Chrysotile
Formula: Mg3(Si2O5)(OH)4
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Habit: hexagonal, tabular to elongated prisms
Colour: light to dark green, greenish black
Description: Groups of superb dark emerald green crystals, typically "edge-on" on magnetite matrix, are Tilly Foster classics; also a ferroan variety (ripidolite) has been reported. Early workers referred to this mineral as chlorite
Clinochlore var. Leuchtenbergite
Formula: Mg5Al(AlSi3O10)(OH)8
Habit: encrustations
Colour: white
Description: Reported as incrustations and micro-crystals on magnetite - chondrodite matrix also found as white micro-crystals
Clinohumite
Formula: Mg9(SiO4)4F2
Description: Rare, found in highly modified forms
Clinozoisite
Formula: (CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Danburite
Formula: CaB2Si2O8
Description: An isolated occurrence of small transparent crystals within a cavity in gneiss was reported
Datolite
Formula: CaB(SiO4)(OH)
Description: Pale crystals and masses are reported to have been recovered in gneiss Also occurs with compact radiated natrolite
'Diallage'
Diopside
Formula: CaMgSi2O6
Colour: green, pink
Description: Reported as crystals in pyrrhotite, dolomite, calcite, and gneiss; also in green granular and crystalline masses Also found as stout pink crystals on serpentine and as micro lath-like crystals, transparent, and embedded in a matrix of white calcite.
Dolomite
Formula: CaMg(CO3)2
Habit: rhombohedral
Colour: white, pale grey
Description: Recovered as large cleavable masses and large rhombohedral crystals. In 1953 Ronald Januzzi supplied a large crystal to the Shell Research and Development Center in Houston Texas, where it was used for research purposes
Dravite
Formula: NaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Enstatite
Formula: Mg2Si2O6
Habit: massive
Colour: grey-green, grey-brown
Description: Found in large gray-green and gray-brown masses. Exposed faces on dumps commonly alter to a variety referred to as "bronzite"
Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Habit: elongated, striated prisms
Colour: dark green, yellow-green
Description: Reported as massive in gneiss; dark green crystals up to an inch long are rare.
Erythrite
Formula: Co3(AsO4)2 · 8H2O
Habit: encrustation
Colour: magenta
Description: Occurs as small (to 1 cm.) globular encrustations mixed with some cobalt rich chlorite (?) as an alteration of linnaeite. Confirmed by EDAX-SEM at the New York State Museum.
'Fayalite-Forsterite Series'
Description: Reported as abundant although commonly altered to serpentine
Ferro-actinolite
Formula: ◻Ca2Fe2+5(Si8O22)(OH)2
Fluorapatite
Formula: Ca5(PO4)3F
Habit: prismatic
Colour: white, green
Description: Found as small, transparent green crystals; large crude crystals have been reported associated with hornblende. As grayish-white crystals in serpentine; also as an anhedral half inch pale green mass embedded in chondrodite
Fluorite
Formula: CaF2
Habit: octahedral, cubic, nearly spherical complexly formed
Colour: purple, white, yellow, pink
Description: First noted by Bridenbaugh in 1873, fluorite from Tilly Foster was described in 1874 by J. D. Dana as occuring "pink, massive, and occasionally in amethystine cubes" (p. 374). It is also found in purple, white and yellow small crystals; the author has noted small spherical aggregates of fluorite in the Trainer Collection of the New York State Museum. Occasionally fluorite is slickensided. Found with crocidolite as pale green octahedral micro crystals in cavities in feldspar.
Galena
Formula: PbS
Habit: massive
Colour: dark grey,metallic
Description: A coarse granular mass ( 10 cm.) was reported to have been given to John Trainer by a former mine employee
Goethite
Formula: Fe3+O(OH)
Habit: botryoidal
Description: Reported as fibrous with lustrous "patent-leather" botryoidal surfaces, on limonite
Graphite
Formula: C
Description: Found as isolated microscopic flakes in dolomite
Grossular
Formula: Ca3Al2(SiO4)3
Habit: dodecahedral
Colour: lime green
Description: "Oil-green" dodecahedrons are in the collection of the American Museum of Natural History in New York; also a superb example is contained in the Brush Collection of the Peabody Museum of Natural History at Yale University, specimen # 2. 935.
Gypsum
Formula: CaSO4 · 2H2O
Colour: colorless
Description: Small, colorless "lath-like" crystals and crystal aggregates occur in gneiss Also found associated with other sulfates within the ore body.
Hedenbergite
Formula: CaFe2+Si2O6
Habit: grains
Description: Round dark grains (variety coccolite) occur in limestone
Hematite
Formula: Fe2O3
Description: Reported as veins in serpentine, and small reddish stains
'Heulandite Subgroup'
Formula: (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Description: Small cleavages and crystals occur in cavities and seams in gneiss
Hexahydrite
Formula: Mg(H2O)6(SO4)
Habit: fibrous masses
Colour: white
Description: Found in micro groups of fibrous white masses
Hisingerite ?
Formula: Fe3+2(Si2O5)(OH)4 · 2H2O
Habit: botryoidal encrustations
Colour: brown
Description: Trainer described botryoidal incrustations of "amorphous brown hydrated ferric-silicate of uncertain composition"
'Hornblende Root Name Group'
Formula: ◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
Habit: cleavable masses
Colour: black, green
Description: Occurs in large black and green cleavable masses. Small crystals up to 2 cm. are uncommon; also found in fibrous and acicular crystals
Humite
Formula: Mg7(SiO4)3F2
Description: Found as large, coarse crystals, generally with various degrees of alteration to serpentine, Chukanov(2014) provides the following IR spectrum based on yellow grains: Wavenumbers (cm1): 3560, 3405w, 1075sh, 991s, 954s, 915sh, 888s, 851, 763, 617, 552, 540sh,495sh, 484, 420s, 395s Rruff.info provides the following empirical formula based on microprobe: (Mg0.91Fe0.09)7(Si0.99Ti0.01O4)3(F0.76(OH)0.24)2, see http://rruff.info/humite/display=default/R040071
Hydromagnesite
Formula: Mg5(CO3)4(OH)2 · 4H2O
Habit: globular, hemispherical aggregates
Colour: white
Description: J. D. Dana described a white chalky coating on serpentine. Many specimens show the typical habit of white, spherical aggregates coating fractures.
Hydrotalcite
Formula: Mg6Al2(CO3)(OH)16 · 4H2O
Habit: fibrous, foliated
Colour: white
Description: Reported as white and fibrous, sometimes foliated
Ilmenite
Formula: Fe2+TiO3
Habit: flat, tabular, rhombohedral
Description: Flat tabular crystals were found with tourmaline in gneiss Two relatively large crystals, one about 1/4" in diameter, a fine euhedral rhombohedral crystal, embedded in a matrix of magnetite, diopside, chlorite and green serpentine.
Ilvaite
Formula: CaFe3+Fe2+2(Si2O7)O(OH)
Jarosite
Formula: KFe3+3(SO4)2(OH)6
Habit: spheroidal aggregates
Colour: yellow
Description: Observed to occur as small yellow spheroidal ag¬gregates in micro sizes
Kaolinite
Formula: Al2(Si2O5)(OH)4
Description: Reported by Trainer as pseudomorphous after serpentine; six years later he retracted that identification after x-ray analysis
'K Feldspar'
'K Feldspar var. Adularia'
Formula: KAlSi3O8
Habit: wedge=shaped
Colour: tan
Description: Very rare, secondary vein cutting annite/amphibole with crystal to 15mm.
Laumontite
Formula: CaAl2Si4O12 · 4H2O
Habit: elongated prismatic
Colour: white
Description: Groups of white crystals and coatings were reported in gneiss seams
Lepidocrocite ?
Formula: Fe3+O(OH)
Habit: encrustations and rosettes
Colour: reddish-brown, blood-red
Description: Found as blood-red incrustations and micro-rosettes on diopside associated with pyrrhotite, pyrite, chalcopyrite, malachite, calcite, aragonite, and amphibole.
'Limonite'
Linarite
Formula: PbCu(SO4)(OH)2
Habit: coating
Description: Micro - incrustation associated with galena, sulfur, cerussite, and plumbian scheelite
Linnaeite
Formula: Co2+Co3+2S4
Habit: twinned octahedron, cubo-octahedral
Colour: steel-grey
Description: An isolated occurrence of minute, steel-gray twinned octahedral crystals on magnetite was recovered in 1955 Also noted as micro octahedral crystals modified by the cube. Associated with white serpentine and dolomite. As well as magnetite, chondrodite and altered clinochlore.
Lizardite
Formula: Mg3(Si2O5)(OH)4
Habit: massive or as pseudomorphs of various minerals
Colour: white, shades of green
Description: Many specimens of "serpentine" appear to be lizardite based on their softness of about 2.5.
Magnesite
Formula: MgCO3
Colour: white
Description: Found as small white crystals, in small fine grained marble-like masses (white) as well as in large cleavages
Magnetite
Formula: Fe2+Fe3+2O4
Habit: dodecahedral, octahedral, dendritic
Colour: black
Description: Tilly Foster is noted for superb dodecahedral and striated octahedral crystal groups, with individual crystals up to 3 cm. Octahedrons were typically found in seams in gneiss, while dodecahedrons were more commonly found within the magnetite ore body. Dendritic forms on serpentine have also been reported Large masses of this species have been found exhibiting perfect octahedral parting.
Malachite
Formula: Cu2(CO3)(OH)2
Habit: massive, crusts, stains
Colour: green
Description: Reported as small masses, crusts, and stains
Marcasite
Formula: FeS2
Description: Occurrence was first reported by James Manchester, lack of specimens reported since that time is most likely due to rapid decomposition on dumps
Marialite
Formula: Na4Al3Si9O24Cl
Habit: cleavable mass
Colour: white grayish-white, pale pink to lilac
Description: reported as a 5 cm. vein of grayish-white color; cleavage sections show a fibrous appearance
Melanterite
Formula: Fe2+(H2O)6(SO4) · H2O
Habit: cursts and coatings
Description: As an alteration product of an unknown sulfide Thick surface incrustation on hornblende
Microcline
Formula: K(AlSi3O8)
Habit: massive
Colour: flesh
Description: Reported as plentiful in flesh colored masses; orthoclase mentioned in by J. D. Dana in 1874 is most likely microcline
Molybdenite
Formula: MoS2
Habit: foliated, granular
Description: Recovered as small foliated and granular masses; crystals rare
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Habit: cleavable masses, pseudo-hexagonal tabular
Description: Crystal aggregates and books were recovered in gneiss. Some euhedral crystals associated with magnetite and chondrodite. However, the New York State Museum reports that specimens tested turned out to be phlogopite.
Native Gold ?
Formula: Au
Description: A single, unconfirmed report of a micro specimen in ore has been reported by a collector
Native Sulphur
Formula: S8
Habit: anhedral
Colour: bright yellow
Description: Observed as very tiny micro crystals in cavities in altered galena with scheelite.
Natrolite
Formula: Na2Al2Si3O10 · 2H2O
Habit: acicular, radiating masses
Colour: white
Description: Slender, prismatic crystals and white radiating masses on seams in gneiss
Opal
Formula: SiO2 · nH2O
Habit: coatings
Colour: grayish-white
Description: Occurs as small grayish white coating on various minerals
Palygorskite
Formula: ◻Al2Mg22Si8O20(OH)2(H2O)4 · 4H2O
Description: typical fibrous "mountain leather" habit
Pargasite
Formula: NaCa2(Mg4Al)(Si6Al2)O22(OH)2
Pectolite
Formula: NaCa2Si3O8(OH)
Habit: radiating fibrous masses
Description: Reported as minute radiating fibrous masses; rare Validation of this species reported many years ago is based upon a serpentine pseudomorph after pectolite found in 1946 (Fredericks) and confirmed. It occurs as a radiated pale green mass 3 x 4" in a pocket in massive chondrodite.
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Habit: tabular
Description: Plates of crystals occur on serpentine, partially altered to serpentine
Posnjakite
Formula: Cu4(SO4)(OH)6 · H2O
Habit: fan shaped aggregates and tabular
Colour: blue-green
Description: Observed as blue-green fan shaped aggregates and single micro crystals on magnetite. Also found as a blue-green tabular micro crystal on serpentine.
Prehnite
Formula: Ca2Al2Si3O10(OH)2
Habit: coatings, prismatic
Colour: grayish-green, colorless
Description: Reported as grayish-green coatings on gneiss Also found as perfect, colorless, glassy, prismatic micro crystals on hornblende. Occurs as an encrustation 3" x 4" in surface area (see drawings in Januzzi 1976 pg. 170).
'Psilomelane' ?
Habit: spheroidal aggregates
Colour: black
Description: Found as a single occurrence as a black spheroidal micro aggregate in the ore body.
Pyrite
Formula: FeS2
Habit: cubic, octahedral
Colour: brassy
Description: Cubes have been found up to .5 cm; also in veins and as coatings Octahedral crystals (micro) have been found.
'Pyroxene Group'
Formula: ADSi2O6
Pyrrhotite
Formula: Fe1-xS
Habit: hexagonal prismatic
Colour: brown
Description: Occurs as brown, tabular, hexagonal crystals; more commonly massive
Quartz
Formula: SiO2
Habit: elongated prismatic with rhombohedral terminations
Colour: clear, milky, smoky
Description: Small clear and smoky crystals rare; massive milky quartz is abundant
Quartz var. Rose Quartz
Formula: SiO2
Habit: massive
Colour: pink
Quartz var. Smoky Quartz
Formula: SiO2
Riebeckite
Formula: ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Habit: fibrous
Colour: lavender-blue
Description: Variety crocidolite reported as lavender-blue, fibrous masses in gneiss. However, "riebeckite" tested at the New York State Museum from other sites in the Hudson Highlands turned out to be other amphiboles.
'Riebeckite Root Name Group'
Formula: ◻[Na2][Z2+3Fe3+2]Si8O22(OH,F,Cl)2
'Riebeckite Root Name Group var. Crocidolite'
Formula: ◻[Na2][Z2+3Fe3+2]Si8O22(OH,F,Cl)2
Rutile
Formula: TiO2
Habit: acicular
Colour: dark red
Description: As micro specimens on gneiss
Scheelite
Formula: Ca(WO4)
Habit: bipyramidal
Colour: grayish white, white
Fluorescence: bright bluish white
Description: Several 0.6 cm. X 2.5 cm. veins were found in massive hornblende; also small crystals in galena
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
'Serpentine Subgroup var. Marmolite'
Formula: D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
'Serpentine Subgroup var. Picrolite'
Formula: D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Colour: dark green
Description: Columnar serpentine.
Serpierite ?
Formula: Ca(Cu,Zn)4(SO4)2(OH)6 · 3H2O
Habit: coatings
Colour: blue-white
Description: Found as tiny tufts of sky-blue acicular micro crystals on white serpentine.
Siderite
Formula: FeCO3
Habit: spherical aggregates, cleavable masses
Colour: brown
Description: Reported as brown spherical aggregates on biotite schist, and reddish-brown cleavages
Sphalerite
Formula: ZnS
Colour: yellow-brown
Description: Small masses associated with galena
Spinel
Formula: MgAl2O4
Habit: octahedral
Description: Small octahedral crystals are found with granular chondrodite in limestone
'Stilbite Subgroup'
Formula: M6-7[Al8-9Si27-28O72] · nH2O
Colour: brown
Description: Brown stilbite occurs in gneiss; rare
Szomolnokite
Formula: FeSO4 · H2O
Colour: yellow
Description: Observed in transparent yellow micro crystals. The reference cited was privately published. No validation listed in publication.
Talc
Formula: Mg3Si4O10(OH)2
Habit: fibrous, foliated, nmassive, pseudomorphous
Colour: pale green, gray-green
Description: Reported as veins in magnetite ore; fibrous and foliated masses have been found in dolomite
Talc var. Steatite
Formula: Mg3(Si4O10)(OH)2
Thomsonite-Ca
Formula: NaCa2[Al5Si5O20] · 6H2O
Habit: radiating columnar
Colour: white
Description: Reported as white, radiating groups of columnar crystals, on gneiss
Thorite ?
Formula: Th(SiO4)
Habit: anhedral
Colour: orange
Description: A single orange, microscopic anhedral mass in hornblende has been reported
Titanite
Formula: CaTi(SiO4)O
Colour: brown, greenish, yellow
Description: Fine gemmy greenish and yellowish crystals (some twinned) were found in pockets in 1891. Lesser quality brown and yellow crystals, up to 1 cm., have been found in serpentine and albite
'Tourmaline'
Formula: AD3G6(T6O18)(BO3)3X3Z
Habit: elongated prisms, massive
Colour: black
Description: lustrous black crystals in gneiss and calcite; it also occurs in a brownish clay, and in massive form
Tremolite
Formula: ◻Ca2Mg5(Si8O22)(OH)2
Habit: radiating acicular, massive
Colour: gray-green, gray-blue
Description: Reported as a massive six inch vein four feet in length, gray-blue in color. Peter Zodac reported that Dr. Alonzo Quinn of Brown University confirmed the identification. Also reported to occur in small, radiating groups and flat gray-green crystals on magnetite. Occurs in long grayish-white fibrous tufts in enstatite. As well as in fine and coarse grained aggregates
Vermiculite
Formula: Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Zircon
Formula: Zr(SiO4)
Habit: elongated prismatic
Colour: brown
Description: Brown crystals up to 3 cm. have been reported in hornblende; also as a constituent of the gneiss country-rock

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Native Gold ?1.AA.05Au
Graphite1.CB.05aC
Native Sulphur1.CC.05S8
Group 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Sphalerite2.CB.05aZnS
Chalcopyrite2.CB.10aCuFeS2
Pyrrhotite2.CC.10Fe1-xS
Galena2.CD.10PbS
Linnaeite2.DA.05Co2+Co3+2S4
Molybdenite2.EA.30MoS2
Pyrite2.EB.05aFeS2
Marcasite2.EB.10aFeS2
Arsenopyrite2.EB.20FeAsS
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Goethite4.00.Fe3+O(OH)
Magnetite4.BB.05Fe2+Fe3+2O4
Spinel4.BB.05MgAl2O4
Hematite4.CB.05Fe2O3
Ilmenite4.CB.05Fe2+TiO3
Quartz4.DA.05SiO2
var. Rose Quartz4.DA.05SiO2
var. Smoky Quartz4.DA.05SiO2
Opal4.DA.10SiO2 · nH2O
Rutile4.DB.05TiO2
Brucite4.FE.05Mg(OH)2
var. Nemalite4.FE.05Mg(OH)2
Lepidocrocite ?4.FE.15Fe3+O(OH)
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Magnesite5.AB.05MgCO3
Siderite5.AB.05FeCO3
Ankerite ?5.AB.10Ca(Fe2+,Mg)(CO3)2
Dolomite5.AB.10CaMg(CO3)2
Aragonite5.AB.15CaCO3
Cerussite5.AB.15PbCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Hydromagnesite5.DA.05Mg5(CO3)4(OH)2 · 4H2O
Hydrotalcite5.DA.50Mg6Al2(CO3)(OH)16 · 4H2O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Anhydrite7.AD.30CaSO4
Baryte7.AD.35BaSO4
Brochantite7.BB.25Cu4(SO4)(OH)6
Jarosite7.BC.10KFe3+3(SO4)2(OH)6
Linarite7.BC.65PbCu(SO4)(OH)2
Szomolnokite7.CB.05FeSO4 · H2O
Hexahydrite7.CB.25Mg(H2O)6(SO4)
Melanterite7.CB.35Fe2+(H2O)6(SO4) · H2O
Gypsum7.CD.40CaSO4 · 2H2O
Posnjakite7.DD.10Cu4(SO4)(OH)6 · H2O
Serpierite ?7.DD.30Ca(Cu,Zn)4(SO4)2(OH)6 · 3H2O
Scheelite7.GA.05Ca(WO4)
Group 8 - Phosphates, Arsenates and Vanadates
Fluorapatite8.BN.05Ca5(PO4)3F
Erythrite8.CE.40Co3(AsO4)2 · 8H2O
Autunite8.EB.05Ca(UO2)2(PO4)2 · 10-12H2O
Group 9 - Silicates
Chrysotile9.00.Mg3(Si2O5)(OH)4
Almandine9.AD.25Fe2+3Al2(SiO4)3
Grossular9.AD.25Ca3Al2(SiO4)3
Thorite ?9.AD.30Th(SiO4)
Zircon9.AD.30Zr(SiO4)
Chondrodite9.AF.45Mg5(SiO4)2F2
Humite9.AF.50Mg7(SiO4)3F2
Clinohumite9.AF.55Mg9(SiO4)4F2
Titanite9.AG.15CaTi(SiO4)O
Datolite9.AJ.20CaB(SiO4)(OH)
Axinite-(Fe)9.BD.20Ca2Fe2+Al2BSi4O15OH
Ilvaite9.BE.07CaFe3+Fe2+2(Si2O7)O(OH)
Clinozoisite9.BG.05a(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Allanite-(Ce)9.BG.05b(CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)
Dravite9.CK.05NaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Enstatite9.DA.05Mg2Si2O6
Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Diopside9.DA.15CaMgSi2O6
Hedenbergite9.DA.15CaFe2+Si2O6
Actinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Ferro-actinolite9.DE.10◻Ca2Fe2+5(Si8O22)(OH)2
Tremolite9.DE.10◻Ca2Mg5(Si8O22)(OH)2
Pargasite9.DE.15NaCa2(Mg4Al)(Si6Al2)O22(OH)2
Riebeckite9.DE.25◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Pectolite9.DG.05NaCa2Si3O8(OH)
Prehnite9.DP.20Ca2Al2Si3O10(OH)2
Talc
var. Steatite
9.EC.05Mg3(Si4O10)(OH)2
9.EC.05Mg3Si4O10(OH)2
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Vermiculite9.EC.50Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Clinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
var. Leuchtenbergite9.EC.55Mg5Al(AlSi3O10)(OH)8
Kaolinite ?9.ED.05Al2(Si2O5)(OH)4
Hisingerite ?9.ED.10Fe3+2(Si2O5)(OH)4 · 2H2O
Antigorite9.ED.15Mg3(Si2O5)(OH)4
Lizardite9.ED.15Mg3(Si2O5)(OH)4
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Palygorskite9.EE.20◻Al2Mg22Si8O20(OH)2(H2O)4 · 4H2O
Microcline9.FA.30K(AlSi3O8)
Albite9.FA.35Na(AlSi3O8)
var. Oligoclase9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
Danburite9.FA.65CaB2Si2O8
Marialite9.FB.15Na4Al3Si9O24Cl
Natrolite9.GA.05Na2Al2Si3O10 · 2H2O
Thomsonite-Ca9.GA.10NaCa2[Al5Si5O20] · 6H2O
Laumontite9.GB.10CaAl2Si4O12 · 4H2O
Unclassified
'K Feldspar
var. Adularia'
-KAlSi3O8
'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Apophyllite Group'-AB4[Si8O20]X · 8H2O
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
'Chabazite'-
'Diallage'-
'Heulandite Subgroup'-(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
'Limonite'-
'Psilomelane' ?-
'Stilbite Subgroup'-M6-7[Al8-9Si27-28O72] · nH2O
'Tourmaline'-AD3G6(T6O18)(BO3)3X3Z
'Fayalite-Forsterite Series'-
'Riebeckite Root Name Group'-◻[Na2][Z2+3Fe3+2]Si8O22(OH,F,Cl)2
'Hornblende Root Name Group'-◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
'Riebeckite Root Name Group
var. Crocidolite'
-◻[Na2][Z2+3Fe3+2]Si8O22(OH,F,Cl)2
'Chrysolite'-
'K Feldspar'-
'Pyroxene Group'-ADSi2O6
'Serpentine Subgroup
var. Marmolite'
-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
'Amphibole Supergroup
var. Byssolite'
-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Serpentine Subgroup'-D3[Si2O5](OH)4
'var. Picrolite'-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn

List of minerals for each chemical element

HHydrogen
H Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
H Allanite-(Ce)(CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)
H Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
H AntigoriteMg3(Si2O5)(OH)4
H Apophyllite GroupAB4[Si8O20]X · 8H2O
H AutuniteCa(UO2)2(PO4)2 · 10-12H2O
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
H BrochantiteCu4(SO4)(OH)6
H BruciteMg(OH)2
H ChrysotileMg3(Si2O5)(OH)4
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
H ClinochloreMg5Al(AlSi3O10)(OH)8
H Clinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
H DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
H DatoliteCaB(SiO4)(OH)
H Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
H ErythriteCo3(AsO4)2 · 8H2O
H Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
H Ferro-actinolite◻Ca2Fe52+(Si8O22)(OH)2
H GoethiteFe3+O(OH)
H GypsumCaSO4 · 2H2O
H Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
H HexahydriteMg(H2O)6(SO4)
H HisingeriteFe23+(Si2O5)(OH)4 · 2H2O
H HydromagnesiteMg5(CO3)4(OH)2 · 4H2O
H HydrotalciteMg6Al2(CO3)(OH)16 · 4H2O
H IlvaiteCaFe3+Fe22+(Si2O7)O(OH)
H JarositeKFe33+(SO4)2(OH)6
H KaoliniteAl2(Si2O5)(OH)4
H LaumontiteCaAl2Si4O12 · 4H2O
H LepidocrociteFe3+O(OH)
H LinaritePbCu(SO4)(OH)2
H LizarditeMg3(Si2O5)(OH)4
H MalachiteCu2(CO3)(OH)2
H MelanteriteFe2+(H2O)6(SO4) · H2O
H MuscoviteKAl2(AlSi3O10)(OH)2
H Brucite var. NemaliteMg(OH)2
H NatroliteNa2Al2Si3O10 · 2H2O
H OpalSiO2 · nH2O
H Palygorskite◻Al2Mg22Si8O20(OH)2(H2O)4 · 4H2O
H PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2
H PectoliteNaCa2Si3O8(OH)
H PhlogopiteKMg3(AlSi3O10)(OH)2
H PosnjakiteCu4(SO4)(OH)6 · H2O
H PrehniteCa2Al2Si3O10(OH)2
H Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
H SerpieriteCa(Cu,Zn)4(SO4)2(OH)6 · 3H2O
H Talc var. SteatiteMg3(Si4O10)(OH)2
H Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
H SzomolnokiteFeSO4 · H2O
H TalcMg3Si4O10(OH)2
H Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
H Tremolite◻Ca2Mg5(Si8O22)(OH)2
H VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
H Riebeckite Root Name Group◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
H Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
H Riebeckite Root Name Group var. Crocidolite◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
H Serpentine Subgroup var. MarmoliteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
H Amphibole Supergroup var. ByssoliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
H Clinochlore var. LeuchtenbergiteMg5Al(AlSi3O10)(OH)8
H Serpentine SubgroupD3[Si2O5](OH)4
H Serpentine Subgroup var. PicroliteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
BBoron
B DanburiteCaB2Si2O8
B DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
B DatoliteCaB(SiO4)(OH)
B Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
B TourmalineAD3G6(T6O18)(BO3)3X3Z
CCarbon
C AnkeriteCa(Fe2+,Mg)(CO3)2
C AragoniteCaCO3
C CalciteCaCO3
C CerussitePbCO3
C DolomiteCaMg(CO3)2
C GraphiteC
C HydromagnesiteMg5(CO3)4(OH)2 · 4H2O
C HydrotalciteMg6Al2(CO3)(OH)16 · 4H2O
C MagnesiteMgCO3
C MalachiteCu2(CO3)(OH)2
C SideriteFeCO3
OOxygen
O Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
O K Feldspar var. AdulariaKAlSi3O8
O AlbiteNa(AlSi3O8)
O Allanite-(Ce)(CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)
O Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
O AnhydriteCaSO4
O AnkeriteCa(Fe2+,Mg)(CO3)2
O AntigoriteMg3(Si2O5)(OH)4
O Apophyllite GroupAB4[Si8O20]X · 8H2O
O AragoniteCaCO3
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O AutuniteCa(UO2)2(PO4)2 · 10-12H2O
O AlmandineFe32+Al2(SiO4)3
O BaryteBaSO4
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
O BrochantiteCu4(SO4)(OH)6
O BruciteMg(OH)2
O CalciteCaCO3
O CerussitePbCO3
O ChrysotileMg3(Si2O5)(OH)4
O ChondroditeMg5(SiO4)2F2
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
O ClinochloreMg5Al(AlSi3O10)(OH)8
O ClinohumiteMg9(SiO4)4F2
O Clinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
O DanburiteCaB2Si2O8
O DiopsideCaMgSi2O6
O DolomiteCaMg(CO3)2
O DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
O DatoliteCaB(SiO4)(OH)
O EnstatiteMg2Si2O6
O Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
O ErythriteCo3(AsO4)2 · 8H2O
O Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
O Ferro-actinolite◻Ca2Fe52+(Si8O22)(OH)2
O FluorapatiteCa5(PO4)3F
O GoethiteFe3+O(OH)
O GrossularCa3Al2(SiO4)3
O GypsumCaSO4 · 2H2O
O HedenbergiteCaFe2+Si2O6
O HematiteFe2O3
O Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
O HexahydriteMg(H2O)6(SO4)
O HisingeriteFe23+(Si2O5)(OH)4 · 2H2O
O HumiteMg7(SiO4)3F2
O HydromagnesiteMg5(CO3)4(OH)2 · 4H2O
O HydrotalciteMg6Al2(CO3)(OH)16 · 4H2O
O IlmeniteFe2+TiO3
O IlvaiteCaFe3+Fe22+(Si2O7)O(OH)
O JarositeKFe33+(SO4)2(OH)6
O KaoliniteAl2(Si2O5)(OH)4
O LaumontiteCaAl2Si4O12 · 4H2O
O LepidocrociteFe3+O(OH)
O LinaritePbCu(SO4)(OH)2
O LizarditeMg3(Si2O5)(OH)4
O MagnesiteMgCO3
O MagnetiteFe2+Fe23+O4
O MalachiteCu2(CO3)(OH)2
O MarialiteNa4Al3Si9O24Cl
O MelanteriteFe2+(H2O)6(SO4) · H2O
O MicroclineK(AlSi3O8)
O MuscoviteKAl2(AlSi3O10)(OH)2
O Brucite var. NemaliteMg(OH)2
O NatroliteNa2Al2Si3O10 · 2H2O
O Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
O OpalSiO2 · nH2O
O Palygorskite◻Al2Mg22Si8O20(OH)2(H2O)4 · 4H2O
O PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2
O PectoliteNaCa2Si3O8(OH)
O PhlogopiteKMg3(AlSi3O10)(OH)2
O PosnjakiteCu4(SO4)(OH)6 · H2O
O PrehniteCa2Al2Si3O10(OH)2
O QuartzSiO2
O Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
O Quartz var. Rose QuartzSiO2
O RutileTiO2
O ScheeliteCa(WO4)
O SerpieriteCa(Cu,Zn)4(SO4)2(OH)6 · 3H2O
O SideriteFeCO3
O Quartz var. Smoky QuartzSiO2
O SpinelMgAl2O4
O Talc var. SteatiteMg3(Si4O10)(OH)2
O Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
O SzomolnokiteFeSO4 · H2O
O TalcMg3Si4O10(OH)2
O Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
O ThoriteTh(SiO4)
O TitaniteCaTi(SiO4)O
O TourmalineAD3G6(T6O18)(BO3)3X3Z
O Tremolite◻Ca2Mg5(Si8O22)(OH)2
O VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
O ZirconZr(SiO4)
O Fayalite-Forsterite Series
O Riebeckite Root Name Group◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
O Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
O Riebeckite Root Name Group var. Crocidolite◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
O Pyroxene GroupADSi2O6
O Serpentine Subgroup var. MarmoliteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
O Amphibole Supergroup var. ByssoliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
O Clinochlore var. LeuchtenbergiteMg5Al(AlSi3O10)(OH)8
O Serpentine SubgroupD3[Si2O5](OH)4
O Serpentine Subgroup var. PicroliteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
FFluorine
F Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
F ChondroditeMg5(SiO4)2F2
F ClinohumiteMg9(SiO4)4F2
F FluorapatiteCa5(PO4)3F
F FluoriteCaF2
F HumiteMg7(SiO4)3F2
F Riebeckite Root Name Group◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
F Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
F Riebeckite Root Name Group var. Crocidolite◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
F Amphibole Supergroup var. ByssoliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
NaSodium
Na AlbiteNa(AlSi3O8)
Na DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Na Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Na MarialiteNa4Al3Si9O24Cl
Na NatroliteNa2Al2Si3O10 · 2H2O
Na Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Na PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2
Na PectoliteNaCa2Si3O8(OH)
Na Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Na Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
Na Riebeckite Root Name Group◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
Na Riebeckite Root Name Group var. Crocidolite◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
MgMagnesium
Mg Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
Mg AntigoriteMg3(Si2O5)(OH)4
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mg BruciteMg(OH)2
Mg ChrysotileMg3(Si2O5)(OH)4
Mg ChondroditeMg5(SiO4)2F2
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
Mg ClinohumiteMg9(SiO4)4F2
Mg DiopsideCaMgSi2O6
Mg DolomiteCaMg(CO3)2
Mg DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Mg EnstatiteMg2Si2O6
Mg HexahydriteMg(H2O)6(SO4)
Mg HumiteMg7(SiO4)3F2
Mg HydromagnesiteMg5(CO3)4(OH)2 · 4H2O
Mg HydrotalciteMg6Al2(CO3)(OH)16 · 4H2O
Mg LizarditeMg3(Si2O5)(OH)4
Mg MagnesiteMgCO3
Mg Brucite var. NemaliteMg(OH)2
Mg Palygorskite◻Al2Mg22Si8O20(OH)2(H2O)4 · 4H2O
Mg PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
Mg SpinelMgAl2O4
Mg Talc var. SteatiteMg3(Si4O10)(OH)2
Mg TalcMg3Si4O10(OH)2
Mg Tremolite◻Ca2Mg5(Si8O22)(OH)2
Mg VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Mg Fayalite-Forsterite Series
Mg Serpentine Subgroup var. MarmoliteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Mg Clinochlore var. LeuchtenbergiteMg5Al(AlSi3O10)(OH)8
Mg Serpentine Subgroup var. PicroliteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
AlAluminium
Al K Feldspar var. AdulariaKAlSi3O8
Al AlbiteNa(AlSi3O8)
Al Allanite-(Ce)(CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)
Al Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Al AlmandineFe32+Al2(SiO4)3
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Al ClinochloreMg5Al(AlSi3O10)(OH)8
Al Clinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Al DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Al Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Al Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Al GrossularCa3Al2(SiO4)3
Al Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Al HydrotalciteMg6Al2(CO3)(OH)16 · 4H2O
Al KaoliniteAl2(Si2O5)(OH)4
Al LaumontiteCaAl2Si4O12 · 4H2O
Al MarialiteNa4Al3Si9O24Cl
Al MicroclineK(AlSi3O8)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al NatroliteNa2Al2Si3O10 · 2H2O
Al Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Al Palygorskite◻Al2Mg22Si8O20(OH)2(H2O)4 · 4H2O
Al PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2
Al PhlogopiteKMg3(AlSi3O10)(OH)2
Al PrehniteCa2Al2Si3O10(OH)2
Al SpinelMgAl2O4
Al Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Al Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
Al VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Al Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Al Serpentine Subgroup var. MarmoliteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Al Amphibole Supergroup var. ByssoliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Al Clinochlore var. LeuchtenbergiteMg5Al(AlSi3O10)(OH)8
Al Serpentine Subgroup var. PicroliteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
SiSilicon
Si Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Si K Feldspar var. AdulariaKAlSi3O8
Si AlbiteNa(AlSi3O8)
Si Allanite-(Ce)(CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)
Si Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Si AntigoriteMg3(Si2O5)(OH)4
Si Apophyllite GroupAB4[Si8O20]X · 8H2O
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si AlmandineFe32+Al2(SiO4)3
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Si ChrysotileMg3(Si2O5)(OH)4
Si ChondroditeMg5(SiO4)2F2
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Si ClinochloreMg5Al(AlSi3O10)(OH)8
Si ClinohumiteMg9(SiO4)4F2
Si Clinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Si DanburiteCaB2Si2O8
Si DiopsideCaMgSi2O6
Si DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Si DatoliteCaB(SiO4)(OH)
Si EnstatiteMg2Si2O6
Si Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Si Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Si Ferro-actinolite◻Ca2Fe52+(Si8O22)(OH)2
Si GrossularCa3Al2(SiO4)3
Si HedenbergiteCaFe2+Si2O6
Si Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Si HisingeriteFe23+(Si2O5)(OH)4 · 2H2O
Si HumiteMg7(SiO4)3F2
Si IlvaiteCaFe3+Fe22+(Si2O7)O(OH)
Si KaoliniteAl2(Si2O5)(OH)4
Si LaumontiteCaAl2Si4O12 · 4H2O
Si LizarditeMg3(Si2O5)(OH)4
Si MarialiteNa4Al3Si9O24Cl
Si MicroclineK(AlSi3O8)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si NatroliteNa2Al2Si3O10 · 2H2O
Si Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Si OpalSiO2 · nH2O
Si Palygorskite◻Al2Mg22Si8O20(OH)2(H2O)4 · 4H2O
Si PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2
Si PectoliteNaCa2Si3O8(OH)
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si PrehniteCa2Al2Si3O10(OH)2
Si QuartzSiO2
Si Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Si Quartz var. Rose QuartzSiO2
Si Quartz var. Smoky QuartzSiO2
Si Talc var. SteatiteMg3(Si4O10)(OH)2
Si Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Si TalcMg3Si4O10(OH)2
Si Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
Si ThoriteTh(SiO4)
Si TitaniteCaTi(SiO4)O
Si Tremolite◻Ca2Mg5(Si8O22)(OH)2
Si VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Si ZirconZr(SiO4)
Si Fayalite-Forsterite Series
Si Riebeckite Root Name Group◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
Si Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Si Riebeckite Root Name Group var. Crocidolite◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
Si Pyroxene GroupADSi2O6
Si Serpentine Subgroup var. MarmoliteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Si Amphibole Supergroup var. ByssoliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Si Clinochlore var. LeuchtenbergiteMg5Al(AlSi3O10)(OH)8
Si Serpentine SubgroupD3[Si2O5](OH)4
Si Serpentine Subgroup var. PicroliteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
PPhosphorus
P AutuniteCa(UO2)2(PO4)2 · 10-12H2O
P FluorapatiteCa5(PO4)3F
SSulfur
S AnhydriteCaSO4
S ArsenopyriteFeAsS
S BaryteBaSO4
S BorniteCu5FeS4
S BrochantiteCu4(SO4)(OH)6
S ChalcopyriteCuFeS2
S GalenaPbS
S GypsumCaSO4 · 2H2O
S HexahydriteMg(H2O)6(SO4)
S JarositeKFe33+(SO4)2(OH)6
S LinaritePbCu(SO4)(OH)2
S LinnaeiteCo2+Co23+S4
S MarcasiteFeS2
S MelanteriteFe2+(H2O)6(SO4) · H2O
S MolybdeniteMoS2
S PosnjakiteCu4(SO4)(OH)6 · H2O
S PyriteFeS2
S PyrrhotiteFe1-xS
S SerpieriteCa(Cu,Zn)4(SO4)2(OH)6 · 3H2O
S SphaleriteZnS
S Native SulphurS8
S SzomolnokiteFeSO4 · H2O
ClChlorine
Cl Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Cl MarialiteNa4Al3Si9O24Cl
Cl Riebeckite Root Name Group◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
Cl Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Cl Riebeckite Root Name Group var. Crocidolite◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
Cl Amphibole Supergroup var. ByssoliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
KPotassium
K K Feldspar var. AdulariaKAlSi3O8
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
K Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
K JarositeKFe33+(SO4)2(OH)6
K MicroclineK(AlSi3O8)
K MuscoviteKAl2(AlSi3O10)(OH)2
K PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Ca Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Ca Allanite-(Ce)(CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)
Ca AnhydriteCaSO4
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
Ca AragoniteCaCO3
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Ca CalciteCaCO3
Ca Clinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Ca DanburiteCaB2Si2O8
Ca DiopsideCaMgSi2O6
Ca DolomiteCaMg(CO3)2
Ca DatoliteCaB(SiO4)(OH)
Ca Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Ca Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Ca Ferro-actinolite◻Ca2Fe52+(Si8O22)(OH)2
Ca FluorapatiteCa5(PO4)3F
Ca FluoriteCaF2
Ca GrossularCa3Al2(SiO4)3
Ca GypsumCaSO4 · 2H2O
Ca HedenbergiteCaFe2+Si2O6
Ca Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Ca IlvaiteCaFe3+Fe22+(Si2O7)O(OH)
Ca LaumontiteCaAl2Si4O12 · 4H2O
Ca Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Ca PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2
Ca PectoliteNaCa2Si3O8(OH)
Ca PrehniteCa2Al2Si3O10(OH)2
Ca ScheeliteCa(WO4)
Ca SerpieriteCa(Cu,Zn)4(SO4)2(OH)6 · 3H2O
Ca Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
Ca TitaniteCaTi(SiO4)O
Ca Tremolite◻Ca2Mg5(Si8O22)(OH)2
Ca Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
TiTitanium
Ti Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Ti BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Ti IlmeniteFe2+TiO3
Ti RutileTiO2
Ti TitaniteCaTi(SiO4)O
Ti Amphibole Supergroup var. ByssoliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
MnManganese
Mn Serpentine Subgroup var. MarmoliteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Mn Serpentine Subgroup var. PicroliteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
FeIron
Fe Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Fe Allanite-(Ce)(CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe ArsenopyriteFeAsS
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe AlmandineFe32+Al2(SiO4)3
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fe BorniteCu5FeS4
Fe ChalcopyriteCuFeS2
Fe Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Fe Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Fe Ferro-actinolite◻Ca2Fe52+(Si8O22)(OH)2
Fe GoethiteFe3+O(OH)
Fe HedenbergiteCaFe2+Si2O6
Fe HematiteFe2O3
Fe HisingeriteFe23+(Si2O5)(OH)4 · 2H2O
Fe IlmeniteFe2+TiO3
Fe IlvaiteCaFe3+Fe22+(Si2O7)O(OH)
Fe JarositeKFe33+(SO4)2(OH)6
Fe LepidocrociteFe3+O(OH)
Fe MagnetiteFe2+Fe23+O4
Fe MarcasiteFeS2
Fe MelanteriteFe2+(H2O)6(SO4) · H2O
Fe PyriteFeS2
Fe PyrrhotiteFe1-xS
Fe Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Fe SideriteFeCO3
Fe SzomolnokiteFeSO4 · H2O
Fe VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Fe Fayalite-Forsterite Series
Fe Riebeckite Root Name Group◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
Fe Riebeckite Root Name Group var. Crocidolite◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
Fe Serpentine Subgroup var. MarmoliteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Fe Serpentine Subgroup var. PicroliteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
CoCobalt
Co ErythriteCo3(AsO4)2 · 8H2O
Co LinnaeiteCo2+Co23+S4
NiNickel
Ni Serpentine Subgroup var. MarmoliteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Ni Serpentine Subgroup var. PicroliteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
CuCopper
Cu BorniteCu5FeS4
Cu BrochantiteCu4(SO4)(OH)6
Cu ChalcopyriteCuFeS2
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Cu LinaritePbCu(SO4)(OH)2
Cu MalachiteCu2(CO3)(OH)2
Cu PosnjakiteCu4(SO4)(OH)6 · H2O
Cu SerpieriteCa(Cu,Zn)4(SO4)2(OH)6 · 3H2O
ZnZinc
Zn SerpieriteCa(Cu,Zn)4(SO4)2(OH)6 · 3H2O
Zn SphaleriteZnS
Zn Serpentine Subgroup var. MarmoliteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Zn Serpentine Subgroup var. PicroliteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
AsArsenic
As ArsenopyriteFeAsS
As ErythriteCo3(AsO4)2 · 8H2O
ZrZirconium
Zr ZirconZr(SiO4)
MoMolybdenum
Mo MolybdeniteMoS2
BaBarium
Ba BaryteBaSO4
CeCerium
Ce Allanite-(Ce)(CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)
WTungsten
W ScheeliteCa(WO4)
AuGold
Au Native GoldAu
PbLead
Pb CerussitePbCO3
Pb GalenaPbS
Pb LinaritePbCu(SO4)(OH)2
ThThorium
Th ThoriteTh(SiO4)
UUranium
U AutuniteCa(UO2)2(PO4)2 · 10-12H2O

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Tilly_Foster_Mine
Wikidata ID:Q7802901

Mindat Articles

Chondrodite from Tilly Foster, New York by Olav Revheim


Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

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