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Tin Mountain Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA i
Regional Level Types
Tin Mountain Mine Mine
Fourmile Unincorporated Community
Custer Mining District Mining District
Custer County County
South Dakota State
USA Country

Regional Level Types
Tin Mountain Mine	Mine
Fourmile	Unincorporated Community
Custer Mining District	Mining District
Custer County	County
South Dakota	State
USA	Country

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Latitude & Longitude (WGS84):

43° 44' 49'' North , 103° 43' 14'' West

Latitude & Longitude (decimal):

G#: 9xy0zgbur

Type:

Köppen climate type:

Dfb : Warm-summer humid continental climate

Nearest Settlements:

Place	Population	Distance
Custer	1,952 (2017)	10.0km
Pringle	109 (2017)	18.4km
Hill City	995 (2017)	23.7km
Keystone	343 (2017)	29.3km
Hill View Heights	170 (2006)	36.3km

Mindat Locality ID:

4121

Long-form identifier:

mindat:1:2:4121:1

GUID (UUID V4):

97cf4a9b-3c84-4ffc-8ffd-3da5f4568471

An Li-Cs-Be-niobium-tantalum-mica-quartz mine in pegmatite located in secs. 35, 36, T.3S., R.3E., at Fourmile near Custer.

Mineralization is an irregular, L-shaped, zoned pegmatite body in schist.

Workings include 12 open cuts, 2 tunnels and a shaft with 2 levels and stopes.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

ⓘ 'Columbite-Tantalite'

ⓘ var. Ferrisicklerite

46 valid minerals.

Detailed Mineral List:

ⓘ Albite

Formula: Na(AlSi₃O₈)

References:

Rocks & Minerals: 60: 117-118.

Staatz, M. H.

Norton, J. J.

Page, Lincoln R., Stocking, Hobart E., Smith, Harriet B. (1956) Contributions to the geology of uranium and thorium by the United States Geological Survey and Atomic Energy Commission for the United Nations International Conference on Peaceful Uses of Atomic Energy, Geneva, Switzerland, 1955. Professional Paper 300. US Geological Survey doi:10.3133/pp300

Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

ⓘ Albite var. Andesine

Formula: (Na,Ca)[Al(Si,Al)Si₂O₈]

References:

Roberts, Willard Lincoln, Rapp, George Jr. (1965) Mineralogy of the Black Hills. Bulletin 18. South Dakota School of Mines and Technology

ⓘ Almandine

Formula: Fe²⁺₃Al₂(SiO₄)₃

References:

Rocks & Minerals: 60: 117-118.

ⓘ Amblygonite

Formula: LiAl(PO₄)F

References:

Staatz, M. H.

Norton, J. J.

Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 32 (Table A-1).

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Aurichalcite

Formula: (Zn,Cu)₅(CO₃)₂(OH)₆

References:

Rocks & Minerals: 60: 117-118.

ⓘ Autunite

Formula: Ca(UO₂)₂(PO₄)₂ · 10-12H₂O

References:

Rocks & Minerals: 60: 117-118.

ⓘ Azurite

Formula: Cu₃(CO₃)₂(OH)₂

References:

Rocks & Minerals: 60: 117-118.

ⓘ Beryl

Formula: Be₃Al₂(Si₆O₁₈)

References:

Rocks & Minerals: 60: 117-118

Staatz, M. H.

Norton, J. J.

Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 32 (Table A-1).

Seaman, David (1976) Pegmatite Minerals of the World. In Mineral Localities of Connecticut and Southeastern New York State and Pegmatite Minerals of the World. The Mineralogical Press, Connecticut.

ⓘ Beryl var. Morganite

Formula: Be₃Al₂(Si₆O₁₈)

References:

ⓘ 'Biotite'

Formula: K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂

References:

Rocks & Minerals: 60: 117-118.

Staatz, M. H.

Norton, J. J.

Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

ⓘ Bismuth

Formula: Bi

References:

Rocks & Minerals: 60: 117-118.

ⓘ Bismuthinite

Formula: Bi₂S₃

References:

Rocks & Minerals: 60: 117-118.

ⓘ Bornite

Formula: Cu₅FeS₄

References:

Rocks & Minerals: 60: 117-118.

ⓘ Calcite

Formula: CaCO₃

References:

Rocks & Minerals: 60: 117-118.

Staatz, M. H.

Norton, J. J.

Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

ⓘ Cassiterite

Formula: SnO₂

References:

Rocks & Minerals: 60: 117-118.

Staatz, M. H.

Norton, J. J.

Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

ⓘ Chalcopyrite

Formula: CuFeS₂

References:

Rocks & Minerals: 60: 117-118.

ⓘ 'Chlorite Group'

References:

Staatz, M. H.

Norton, J. J.

Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

ⓘ 'Columbite-Tantalite'

References:

Rocks & Minerals: 60: 117-118

Staatz, M. H.

Norton, J. J.

Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 32 (Table A-1).

ⓘ Cookeite

Formula: (LiAl₄◻)[AlSi₃O₁₀](OH)₈

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Covellite

Formula: CuS

References:

Rocks & Minerals: 60: 117-118.

ⓘ Dawsonite

Formula: NaAlCO₃(OH)₂

References:

American Mineralogist (2003): 88: 1055.

ⓘ Fluorapatite

Formula: Ca₅(PO₄)₃F

References:

Rocks & Minerals: 60: 117-118.

Staatz, M. H.

Norton, J. J.

Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

ⓘ Fourmarierite

Formula: Pb(UO₂)₄O₃(OH)₄ · 4H₂O

References:

Rocks & Minerals: 60: 117-118.

ⓘ Goethite

Formula: α-Fe³⁺O(OH)

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Hemimorphite

Formula: Zn₄Si₂O₇(OH)₂ · H₂O

References:

Rocks & Minerals: 60: 117-118.

ⓘ Hydrozincite

Formula: Zn₅(CO₃)₂(OH)₆

ⓘ Kaolinite

Formula: Al₂(Si₂O₅)(OH)₄

References:

Staatz, M. H.

Norton, J. J.

Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

ⓘ Kasolite

Formula: Pb(UO₂)(SiO₄) · H₂O

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ 'Lepidolite'

References:

Rocks & Minerals: 60: 117-118

Staatz, M. H.

Norton, J. J.

Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 32 (Table A-1).

ⓘ 'Limonite'

References:

Rocks & Minerals: 60: 117-118.

ⓘ Löllingite

Formula: FeAs₂

References:

Rocks & Minerals: 60: 117-118.

Staatz, M. H.

Norton, J. J.

Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

References:

Staatz, M. H.

Norton, J. J.

Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

ⓘ Malachite

Formula: Cu₂(CO₃)(OH)₂

References:

Rocks & Minerals: 60: 117-118.

ⓘ Meta-autunite

Formula: Ca(UO₂)₂(PO₄)₂ · 6H₂O

References:

Rocks & Minerals: 60: 117-118.

ⓘ Microcline

Formula: K(AlSi₃O₈)

References:

Rocks & Minerals: 60: 117-118.

Staatz, M. H.

Norton, J. J.

Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

ⓘ 'Microlite Group'

Formula: A_2-mTa₂X_6-wZ_-n

References:

Rocks & Minerals: 60: 117-118

Staatz, M. H.

Norton, J. J.

Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 32 (Table A-1).

ⓘ Montebrasite

Formula: LiAl(PO₄)(OH)

References:

Rocks & Minerals: 60: 117-118.

Staatz, M. H.

Norton, J. J.

Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

ⓘ Montmorillonite

Formula: (Na,Ca)_0.33(Al,Mg)₂(Si₄O₁₀)(OH)₂ · nH₂O

References:

Rocks & Minerals: 60: 117-118.

ⓘ Muscovite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

References:

Rocks & Minerals: 60: 117-118.

Staatz, M. H.

Norton, J. J.

Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

ⓘ Pollucite

Formula: (Cs,Na)₂(Al₂Si₄O₁₂) · 2H₂O

References:

Rocks & Minerals: 60: 117-118

Staatz, M. H.

Norton, J. J.

Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 32 (Table A-1).Januzzi, R.E. and Seaman, David M. (1976) Mineral Localities Of Connecticut and Southern New York State and Pegmatite Minerals of the World.

ⓘ Pyrolusite

Formula: Mn⁴⁺O₂

References:

Rocks & Minerals: 60: 117-118.

ⓘ Quartz

Formula: SiO₂

References:

Rocks & Minerals: 60: 117-118.

Staatz, M. H.

Norton, J. J.

Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

ⓘ Quartz var. Smoky Quartz

Formula: SiO₂

References:

Staatz, M. H.

Norton, J. J.

Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

ⓘ Schorl

Formula: NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)

References:

Staatz, M. H.

Norton, J. J.

Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

ⓘ Siderite

Formula: FeCO₃

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Smithsonite

Formula: ZnCO₃

References:

Rocks & Minerals: 60: 117-118.

ⓘ Sphalerite

Formula: ZnS

References:

Rocks & Minerals: 60: 117-118.

ⓘ Spodumene

Formula: LiAlSi₂O₆

References:

Staatz, M. H.

Norton, J. J.

Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

Roberts, Willard Lincoln, Rapp, George Jr. (1965) Mineralogy of the Black Hills. Bulletin 18. South Dakota School of Mines and Technology

ⓘ Spodumene var. Kunzite

Formula: LiAlSi₂O₆

References:

ⓘ 'Tantalite'

Formula: (Mn,Fe)(Ta,Nb)₂O₆

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Triphylite

Formula: LiFe²⁺PO₄

References:

Rocks & Minerals: 60: 117-118.

ⓘ Triphylite var. Ferrisicklerite

Formula: Li_1-x(Fe³⁺_xFe²⁺_1-x)PO₄

References:

Rocks & Minerals: 60: 117-118.

ⓘ Turquoise ?

Formula: CuAl₆(PO₄)₄(OH)₈ · 4H₂O

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Uraninite

Formula: UO₂

References:

Rocks & Minerals: 60: 117-118.

ⓘ Uranophane

Formula: Ca(UO₂)₂(SiO₃OH)₂ · 5H₂O

References:

Rocks & Minerals: 60: 117-118.

ⓘ Vandendriesscheite

Formula: PbU₇O₂₂ · 12H₂O

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Xenotime-(Y)

Formula: Y(PO₄)

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Zircon

Formula: Zr(SiO₄)

References:

Rocks & Minerals: 60: 117-118.

Gallery:

ⓘ 'Columbite-Tantalite'

LiAl(PO₄)(OH)ⓘ Montebrasite

(Cs,Na)₂(Al₂Si₄O₁₂) · 2H₂Oⓘ Pollucite

LiAlSi₂O₆ⓘ Spodumene

Zr(SiO₄)ⓘ Zircon

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Bismuth	1.CA.05	Bi
Group 2 - Sulphides and Sulfosalts
ⓘ	Bornite	2.BA.15	Cu₅FeS₄
ⓘ	Covellite	2.CA.05a	CuS
ⓘ	Sphalerite	2.CB.05a	ZnS
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
ⓘ	Bismuthinite	2.DB.05	Bi₂S₃
ⓘ	Löllingite	2.EB.15a	FeAs₂
Group 4 - Oxides and Hydroxides
ⓘ	Goethite	4.00.	α-Fe³⁺O(OH)
ⓘ	'Microlite Group'	4.00.	A_2-mTa₂X_6-wZ_-n
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
ⓘ	Quartz var. Smoky Quartz	4.DA.05	SiO₂
ⓘ		4.DA.05	SiO₂
ⓘ	Pyrolusite	4.DB.05	Mn⁴⁺O₂
ⓘ	Cassiterite	4.DB.05	SnO₂
ⓘ	Uraninite	4.DL.05	UO₂
ⓘ	Fourmarierite	4.GB.25	Pb(UO₂)₄O₃(OH)₄ · 4H₂O
ⓘ	Vandendriesscheite	4.GB.40	PbU₇O₂₂ · 12H₂O
Group 5 - Nitrates and Carbonates
ⓘ	Smithsonite	5.AB.05	ZnCO₃
ⓘ	Siderite	5.AB.05	FeCO₃
ⓘ	Calcite	5.AB.05	CaCO₃
ⓘ	Azurite	5.BA.05	Cu₃(CO₃)₂(OH)₂
ⓘ	Malachite	5.BA.10	Cu₂(CO₃)(OH)₂
ⓘ	Hydrozincite	5.BA.15	Zn₅(CO₃)₂(OH)₆
ⓘ	Aurichalcite	5.BA.15	(Zn,Cu)₅(CO₃)₂(OH)₆
ⓘ	Dawsonite	5.BB.10	NaAlCO₃(OH)₂
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Triphylite var. Ferrisicklerite	8.AB.10	Li_1-x(Fe³⁺_xFe²⁺_1-x)PO₄
ⓘ		8.AB.10	LiFe²⁺PO₄
ⓘ	Xenotime-(Y)	8.AD.35	Y(PO₄)
ⓘ	Montebrasite	8.BB.05	LiAl(PO₄)(OH)
ⓘ	Amblygonite	8.BB.05	LiAl(PO₄)F
ⓘ	Fluorapatite	8.BN.05	Ca₅(PO₄)₃F
ⓘ	Turquoise ?	8.DD.15	CuAl₆(PO₄)₄(OH)₈ · 4H₂O
ⓘ	Autunite	8.EB.05	Ca(UO₂)₂(PO₄)₂ · 10-12H₂O
ⓘ	Meta-autunite	8.EB.10	Ca(UO₂)₂(PO₄)₂ · 6H₂O
Group 9 - Silicates
ⓘ	Almandine	9.AD.25	Fe²⁺₃Al₂(SiO₄)₃
ⓘ	Zircon	9.AD.30	Zr(SiO₄)
ⓘ	Uranophane	9.AK.15	Ca(UO₂)₂(SiO₃OH)₂ · 5H₂O
ⓘ	Kasolite	9.AK.15	Pb(UO₂)(SiO₄) · H₂O
ⓘ	Hemimorphite	9.BD.10	Zn₄Si₂O₇(OH)₂ · H₂O
ⓘ	Beryl var. Morganite	9.CJ.05	Be₃Al₂(Si₆O₁₈)
ⓘ		9.CJ.05	Be₃Al₂(Si₆O₁₈)
ⓘ	Schorl	9.CK.05	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
ⓘ	Spodumene var. Kunzite	9.DA.30	LiAlSi₂O₆
ⓘ		9.DA.30	LiAlSi₂O₆
ⓘ	Muscovite	9.EC.15	KAl₂(AlSi₃O₁₀)(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
ⓘ	Microcline	9.FA.30	K(AlSi₃O₈)
ⓘ	Albite var. Andesine	9.FA.35	(Na,Ca)[Al(Si,Al)Si₂O₈]
ⓘ		9.FA.35	Na(AlSi₃O₈)
ⓘ	Pollucite	9.GB.05	(Cs,Na)₂(Al₂Si₄O₁₂) · 2H₂O
Unclassified
ⓘ	'Limonite'	-
ⓘ	'Tantalite'	-	(Mn,Fe)(Ta,Nb)₂O₆
ⓘ	'Lepidolite'	-
ⓘ	'Chlorite Group'	-
ⓘ	'Biotite'	-	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
ⓘ	'Columbite-Tantalite'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Aurichalcite	(Zn,Cu)₅(CO₃)₂(OH)₆
H	ⓘ Autunite	Ca(UO₂)₂(PO₄)₂ · 10-12H₂O
H	ⓘ Azurite	Cu₃(CO₃)₂(OH)₂
H	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
H	ⓘ Cookeite	(LiAl₄◻)[AlSi₃O₁₀](OH)₈
H	ⓘ Dawsonite	NaAlCO₃(OH)₂
H	ⓘ Fourmarierite	Pb(UO₂)₄O₃(OH)₄ · 4H₂O
H	ⓘ Goethite	α-Fe³⁺O(OH)
H	ⓘ Hemimorphite	Zn₄Si₂O₇(OH)₂ · H₂O
H	ⓘ Hydrozincite	Zn₅(CO₃)₂(OH)₆
H	ⓘ Kaolinite	Al₂(Si₂O₅)(OH)₄
H	ⓘ Kasolite	Pb(UO₂)(SiO₄) · H₂O
H	ⓘ Malachite	Cu₂(CO₃)(OH)₂
H	ⓘ Meta-autunite	Ca(UO₂)₂(PO₄)₂ · 6H₂O
H	ⓘ Montebrasite	LiAl(PO₄)(OH)
H	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
H	ⓘ Montmorillonite	(Na,Ca)_0.33(Al,Mg)₂(Si₄O₁₀)(OH)₂ · nH₂O
H	ⓘ Pollucite	(Cs,Na)₂(Al₂Si₄O₁₂) · 2H₂O
H	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
H	ⓘ Turquoise	CuAl₆(PO₄)₄(OH)₈ · 4H₂O
H	ⓘ Uranophane	Ca(UO₂)₂(SiO₃OH)₂ · 5H₂O
H	ⓘ Vandendriesscheite	PbU₇O₂₂ · 12H₂O
Li	Lithium
Li	ⓘ Amblygonite	LiAl(PO₄)F
Li	ⓘ Cookeite	(LiAl₄◻)[AlSi₃O₁₀](OH)₈
Li	ⓘ Triphylite var. Ferrisicklerite	Li_1-x(Fe_x³⁺Fe²⁺_1-x)PO₄
Li	ⓘ Spodumene var. Kunzite	LiAlSi₂O₆
Li	ⓘ Montebrasite	LiAl(PO₄)(OH)
Li	ⓘ Spodumene	LiAlSi₂O₆
Li	ⓘ Triphylite	LiFe²⁺PO₄
Be	Beryllium
Be	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
Be	ⓘ Beryl var. Morganite	Be₃Al₂(Si₆O₁₈)
B	Boron
B	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
C	Carbon
C	ⓘ Aurichalcite	(Zn,Cu)₅(CO₃)₂(OH)₆
C	ⓘ Azurite	Cu₃(CO₃)₂(OH)₂
C	ⓘ Calcite	CaCO₃
C	ⓘ Dawsonite	NaAlCO₃(OH)₂
C	ⓘ Hydrozincite	Zn₅(CO₃)₂(OH)₆
C	ⓘ Malachite	Cu₂(CO₃)(OH)₂
C	ⓘ Siderite	FeCO₃
C	ⓘ Smithsonite	ZnCO₃
O	Oxygen
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Amblygonite	LiAl(PO₄)F
O	ⓘ Albite var. Andesine	(Na,Ca)[Al(Si,Al)Si₂O₈]
O	ⓘ Aurichalcite	(Zn,Cu)₅(CO₃)₂(OH)₆
O	ⓘ Autunite	Ca(UO₂)₂(PO₄)₂ · 10-12H₂O
O	ⓘ Azurite	Cu₃(CO₃)₂(OH)₂
O	ⓘ Almandine	Fe₃²⁺Al₂(SiO₄)₃
O	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
O	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
O	ⓘ Calcite	CaCO₃
O	ⓘ Cassiterite	SnO₂
O	ⓘ Cookeite	(LiAl₄◻)[AlSi₃O₁₀](OH)₈
O	ⓘ Dawsonite	NaAlCO₃(OH)₂
O	ⓘ Triphylite var. Ferrisicklerite	Li_1-x(Fe_x³⁺Fe²⁺_1-x)PO₄
O	ⓘ Fluorapatite	Ca₅(PO₄)₃F
O	ⓘ Fourmarierite	Pb(UO₂)₄O₃(OH)₄ · 4H₂O
O	ⓘ Goethite	α-Fe³⁺O(OH)
O	ⓘ Hemimorphite	Zn₄Si₂O₇(OH)₂ · H₂O
O	ⓘ Hydrozincite	Zn₅(CO₃)₂(OH)₆
O	ⓘ Kaolinite	Al₂(Si₂O₅)(OH)₄
O	ⓘ Kasolite	Pb(UO₂)(SiO₄) · H₂O
O	ⓘ Spodumene var. Kunzite	LiAlSi₂O₆
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Malachite	Cu₂(CO₃)(OH)₂
O	ⓘ Meta-autunite	Ca(UO₂)₂(PO₄)₂ · 6H₂O
O	ⓘ Microcline	K(AlSi₃O₈)
O	ⓘ Montebrasite	LiAl(PO₄)(OH)
O	ⓘ Beryl var. Morganite	Be₃Al₂(Si₆O₁₈)
O	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Montmorillonite	(Na,Ca)_0.33(Al,Mg)₂(Si₄O₁₀)(OH)₂ · nH₂O
O	ⓘ Pollucite	(Cs,Na)₂(Al₂Si₄O₁₂) · 2H₂O
O	ⓘ Pyrolusite	Mn⁴⁺O₂
O	ⓘ Quartz	SiO₂
O	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
O	ⓘ Siderite	FeCO₃
O	ⓘ Smithsonite	ZnCO₃
O	ⓘ Quartz var. Smoky Quartz	SiO₂
O	ⓘ Spodumene	LiAlSi₂O₆
O	ⓘ Tantalite	(Mn,Fe)(Ta,Nb)₂O₆
O	ⓘ Triphylite	LiFe²⁺PO₄
O	ⓘ Turquoise	CuAl₆(PO₄)₄(OH)₈ · 4H₂O
O	ⓘ Uraninite	UO₂
O	ⓘ Uranophane	Ca(UO₂)₂(SiO₃OH)₂ · 5H₂O
O	ⓘ Vandendriesscheite	PbU₇O₂₂ · 12H₂O
O	ⓘ Xenotime-(Y)	Y(PO₄)
O	ⓘ Zircon	Zr(SiO₄)
F	Fluorine
F	ⓘ Amblygonite	LiAl(PO₄)F
F	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
F	ⓘ Fluorapatite	Ca₅(PO₄)₃F
Na	Sodium
Na	ⓘ Albite	Na(AlSi₃O₈)
Na	ⓘ Albite var. Andesine	(Na,Ca)[Al(Si,Al)Si₂O₈]
Na	ⓘ Dawsonite	NaAlCO₃(OH)₂
Na	ⓘ Montmorillonite	(Na,Ca)_0.33(Al,Mg)₂(Si₄O₁₀)(OH)₂ · nH₂O
Na	ⓘ Pollucite	(Cs,Na)₂(Al₂Si₄O₁₂) · 2H₂O
Na	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Mg	Magnesium
Mg	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Mg	ⓘ Montmorillonite	(Na,Ca)_0.33(Al,Mg)₂(Si₄O₁₀)(OH)₂ · nH₂O
Al	Aluminium
Al	ⓘ Albite	Na(AlSi₃O₈)
Al	ⓘ Amblygonite	LiAl(PO₄)F
Al	ⓘ Albite var. Andesine	(Na,Ca)[Al(Si,Al)Si₂O₈]
Al	ⓘ Almandine	Fe₃²⁺Al₂(SiO₄)₃
Al	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Al	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
Al	ⓘ Cookeite	(LiAl₄◻)[AlSi₃O₁₀](OH)₈
Al	ⓘ Dawsonite	NaAlCO₃(OH)₂
Al	ⓘ Kaolinite	Al₂(Si₂O₅)(OH)₄
Al	ⓘ Spodumene var. Kunzite	LiAlSi₂O₆
Al	ⓘ Microcline	K(AlSi₃O₈)
Al	ⓘ Montebrasite	LiAl(PO₄)(OH)
Al	ⓘ Beryl var. Morganite	Be₃Al₂(Si₆O₁₈)
Al	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Al	ⓘ Montmorillonite	(Na,Ca)_0.33(Al,Mg)₂(Si₄O₁₀)(OH)₂ · nH₂O
Al	ⓘ Pollucite	(Cs,Na)₂(Al₂Si₄O₁₂) · 2H₂O
Al	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Al	ⓘ Spodumene	LiAlSi₂O₆
Al	ⓘ Turquoise	CuAl₆(PO₄)₄(OH)₈ · 4H₂O
Si	Silicon
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Albite var. Andesine	(Na,Ca)[Al(Si,Al)Si₂O₈]
Si	ⓘ Almandine	Fe₃²⁺Al₂(SiO₄)₃
Si	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Si	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
Si	ⓘ Cookeite	(LiAl₄◻)[AlSi₃O₁₀](OH)₈
Si	ⓘ Hemimorphite	Zn₄Si₂O₇(OH)₂ · H₂O
Si	ⓘ Kaolinite	Al₂(Si₂O₅)(OH)₄
Si	ⓘ Kasolite	Pb(UO₂)(SiO₄) · H₂O
Si	ⓘ Spodumene var. Kunzite	LiAlSi₂O₆
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	ⓘ Pollucite	(Cs,Na)₂(Al₂Si₄O₁₂) · 2H₂O
Si	ⓘ Quartz	SiO₂
Si	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Si	ⓘ Quartz var. Smoky Quartz	SiO₂
Si	ⓘ Spodumene	LiAlSi₂O₆
Si	ⓘ Uranophane	Ca(UO₂)₂(SiO₃OH)₂ · 5H₂O
Si	ⓘ Zircon	Zr(SiO₄)
P	Phosphorus
P	ⓘ Amblygonite	LiAl(PO₄)F
P	ⓘ Autunite	Ca(UO₂)₂(PO₄)₂ · 10-12H₂O
P	ⓘ Triphylite var. Ferrisicklerite	Li_1-x(Fe_x³⁺Fe²⁺_1-x)PO₄
P	ⓘ Fluorapatite	Ca₅(PO₄)₃F
P	ⓘ Meta-autunite	Ca(UO₂)₂(PO₄)₂ · 6H₂O
P	ⓘ Montebrasite	LiAl(PO₄)(OH)
P	ⓘ Triphylite	LiFe²⁺PO₄
P	ⓘ Turquoise	CuAl₆(PO₄)₄(OH)₈ · 4H₂O
P	ⓘ Xenotime-(Y)	Y(PO₄)
S	Sulfur
S	ⓘ Bismuthinite	Bi₂S₃
S	ⓘ Bornite	Cu₅FeS₄
S	ⓘ Chalcopyrite	CuFeS₂
S	ⓘ Covellite	CuS
S	ⓘ Sphalerite	ZnS
K	Potassium
K	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
K	ⓘ Microcline	K(AlSi₃O₈)
K	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Ca	Calcium
Ca	ⓘ Albite var. Andesine	(Na,Ca)[Al(Si,Al)Si₂O₈]
Ca	ⓘ Autunite	Ca(UO₂)₂(PO₄)₂ · 10-12H₂O
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Fluorapatite	Ca₅(PO₄)₃F
Ca	ⓘ Meta-autunite	Ca(UO₂)₂(PO₄)₂ · 6H₂O
Ca	ⓘ Montmorillonite	(Na,Ca)_0.33(Al,Mg)₂(Si₄O₁₀)(OH)₂ · nH₂O
Ca	ⓘ Uranophane	Ca(UO₂)₂(SiO₃OH)₂ · 5H₂O
Ti	Titanium
Ti	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Mn	Manganese
Mn	ⓘ Pyrolusite	Mn⁴⁺O₂
Mn	ⓘ Tantalite	(Mn,Fe)(Ta,Nb)₂O₆
Fe	Iron
Fe	ⓘ Almandine	Fe₃²⁺Al₂(SiO₄)₃
Fe	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Fe	ⓘ Bornite	Cu₅FeS₄
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Triphylite var. Ferrisicklerite	Li_1-x(Fe_x³⁺Fe²⁺_1-x)PO₄
Fe	ⓘ Goethite	α-Fe³⁺O(OH)
Fe	ⓘ Löllingite	FeAs₂
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Fe	ⓘ Siderite	FeCO₃
Fe	ⓘ Tantalite	(Mn,Fe)(Ta,Nb)₂O₆
Fe	ⓘ Triphylite	LiFe²⁺PO₄
Cu	Copper
Cu	ⓘ Aurichalcite	(Zn,Cu)₅(CO₃)₂(OH)₆
Cu	ⓘ Azurite	Cu₃(CO₃)₂(OH)₂
Cu	ⓘ Bornite	Cu₅FeS₄
Cu	ⓘ Chalcopyrite	CuFeS₂
Cu	ⓘ Covellite	CuS
Cu	ⓘ Malachite	Cu₂(CO₃)(OH)₂
Cu	ⓘ Turquoise	CuAl₆(PO₄)₄(OH)₈ · 4H₂O
Zn	Zinc
Zn	ⓘ Aurichalcite	(Zn,Cu)₅(CO₃)₂(OH)₆
Zn	ⓘ Hemimorphite	Zn₄Si₂O₇(OH)₂ · H₂O
Zn	ⓘ Hydrozincite	Zn₅(CO₃)₂(OH)₆
Zn	ⓘ Smithsonite	ZnCO₃
Zn	ⓘ Sphalerite	ZnS
As	Arsenic
As	ⓘ Löllingite	FeAs₂
Y	Yttrium
Y	ⓘ Xenotime-(Y)	Y(PO₄)
Zr	Zirconium
Zr	ⓘ Zircon	Zr(SiO₄)
Nb	Niobium
Nb	ⓘ Tantalite	(Mn,Fe)(Ta,Nb)₂O₆
Sn	Tin
Sn	ⓘ Cassiterite	SnO₂
Cs	Caesium
Cs	ⓘ Pollucite	(Cs,Na)₂(Al₂Si₄O₁₂) · 2H₂O
Ta	Tantalum
Ta	ⓘ Microlite Group	A_2-mTa₂X_6-wZ_-n
Ta	ⓘ Tantalite	(Mn,Fe)(Ta,Nb)₂O₆
Pb	Lead
Pb	ⓘ Fourmarierite	Pb(UO₂)₄O₃(OH)₄ · 4H₂O
Pb	ⓘ Kasolite	Pb(UO₂)(SiO₄) · H₂O
Pb	ⓘ Vandendriesscheite	PbU₇O₂₂ · 12H₂O
Bi	Bismuth
Bi	ⓘ Bismuth	Bi
Bi	ⓘ Bismuthinite	Bi₂S₃
U	Uranium
U	ⓘ Autunite	Ca(UO₂)₂(PO₄)₂ · 10-12H₂O
U	ⓘ Fourmarierite	Pb(UO₂)₄O₃(OH)₄ · 4H₂O
U	ⓘ Kasolite	Pb(UO₂)(SiO₄) · H₂O
U	ⓘ Meta-autunite	Ca(UO₂)₂(PO₄)₂ · 6H₂O
U	ⓘ Uraninite	UO₂
U	ⓘ Uranophane	Ca(UO₂)₂(SiO₃OH)₂ · 5H₂O
U	ⓘ Vandendriesscheite	PbU₇O₂₂ · 12H₂O

Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate

Wyoming DomainDomain

USA

Black HillsMountain Range

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References

Rocks & Minerals: 60: 117-118.

Staatz, M. H.; Page, L. R.; Norton, J. J.; Wilmarth, V. R. (1963) Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota. USGS Prof. Paper 297C.

Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, U.S. Bureau of Mines Information Circular 8298: 32 (Table A-1).

Januzzi, Ron E., Seaman, David M. (1976) Mineral Localities of Connecticut and Southeastern New York State and Pegmatite Minerals of the World. The Mineralogical Press, Danbury, Connecticut, USA.

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