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Keystone Gold Mining District, Pennington Co., South Dakota, USAi
Regional Level Types
Keystone Gold Mining DistrictMining District
Pennington Co.County
South DakotaState
USACountry

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Key
Latitude & Longitude:
44° North , 102° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~100km
Locality type:


No description has been added for this locality. Can you add one?

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Standard Detailed Strunz Dana Chemical Elements

Commodity 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-localities

29 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

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Alphabetical List Tree Diagram

Detailed Mineral List:

Almandine
Formula: Fe2+3Al2(SiO4)3
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Reference: R&M 75:3 pp 156-169
Arsenopyrite
Formula: FeAsS
Localities: Reported from at least 7 localities in this region.
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Reference: USGS Prof Paper 610 "Principal Gold Producing Districts of the United States"
Bismite
Formula: Bi2O3
Reference: SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
Bismuth
Formula: Bi
Reference: SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
Bismuthinite
Formula: Bi2S3
Reference: SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
Calcite
Formula: CaCO3
Reference: SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
Chalcopyrite
Formula: CuFeS2
Reference: USGS Prof Paper 610 "Principal Gold Producing Districts of the United States"
'Chlorite Group'
Reference: USGS Prof Paper 610 "Principal Gold Producing Districts of the United States"
Cummingtonite
Formula: ☐{Mg2}{Mg5}(Si8O22)(OH)2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Diadochite
Formula: Fe3+2(PO4)(SO4)(OH) · 5H2O
Reference: SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
Diopside
Formula: CaMgSi2O6
Epsomite
Formula: MgSO4 · 7H2O
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Feldspar Group'
Reference: SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: USGS Prof Paper 610 "Principal Gold Producing Districts of the United States"
Gold
Formula: Au
Localities: Reported from at least 14 localities in this region.
Graphite
Formula: C
Reference: USGS Prof Paper 610 "Principal Gold Producing Districts of the United States"
Hedenbergite
Formula: CaFe2+Si2O6
Reference: SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
'Hornblende'
Localities: Reported from at least 7 localities in this region.
Reference: USGS Prof Paper 610 "Principal Gold Producing Districts of the United States"
Magnesite
Formula: MgCO3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: R&M 75:3 pp 156-169
Pickeringite
Formula: MgAl2(SO4)4 · 22H2O
Pyrite
Formula: FeS2
Localities: Reported from at least 6 localities in this region.
Pyrrhotite
Formula: Fe7S8
Localities: Reported from at least 7 localities in this region.
Reference: USGS Prof Paper 610 "Principal Gold Producing Districts of the United States"
Quartz
Formula: SiO2
Localities: Reported from at least 13 localities in this region.
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Rocks & Min.:10:145-146.
Siderite
Formula: FeCO3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Silver
Formula: Ag
Localities: Reported from at least 11 localities in this region.
Sphalerite
Formula: ZnS
Reference: USGS Prof Paper 610 "Principal Gold Producing Districts of the United States"
Staurolite
Formula: Fe2+2Al9Si4O23(OH)
Reference: Rocks & Min.:10:145-146.
Titanite
Formula: CaTi(SiO4)O
Triplite
Formula: (Mn2+,Fe2+)2(PO4)(F,OH)
Reference: SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
Zoisite
Formula: Ca2Al3[Si2O7][SiO4]O(OH)

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Bismuth1.CA.05Bi
Gold1.AA.05Au
Graphite1.CB.05aC
Silver1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
Arsenopyrite2.EB.20FeAsS
Bismuthinite2.DB.05Bi2S3
Chalcopyrite2.CB.10aCuFeS2
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe7S8
Sphalerite2.CB.05aZnS
Group 4 - Oxides and Hydroxides
Bismite4.CB.60Bi2O3
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Ankerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Calcite5.AB.05CaCO3
Magnesite5.AB.05MgCO3
Siderite5.AB.05FeCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Epsomite7.CB.40MgSO4 · 7H2O
Pickeringite7.CB.85MgAl2(SO4)4 · 22H2O
Group 8 - Phosphates, Arsenates and Vanadates
Diadochite8.DB.05Fe3+2(PO4)(SO4)(OH) · 5H2O
Triplite8.BB.10(Mn2+,Fe2+)2(PO4)(F,OH)
Group 9 - Silicates
Almandine9.AD.25Fe2+3Al2(SiO4)3
Cummingtonite9.DE.05☐{Mg2}{Mg5}(Si8O22)(OH)2
Diopside9.DA.15CaMgSi2O6
Hedenbergite9.DA.15CaFe2+Si2O6
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Staurolite9.AF.30Fe2+2Al9Si4O23(OH)
Titanite9.AG.15CaTi(SiO4)O
Zoisite9.BG.10Ca2Al3[Si2O7][SiO4]O(OH)
Unclassified Minerals, Rocks, etc.
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Chlorite Group'-
'Feldspar Group'-
'Garnet Group'-X3Z2(SiO4)3
'Hornblende'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Silver1.1.1.2Ag
Semi-metals and non-metals
Bismuth1.3.1.4Bi
Graphite1.3.6.2C
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Pyrrhotite2.8.10.1Fe7S8
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 2:3
Bismuthinite2.11.2.3Bi2S3
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Bismite4.3.10.2Bi2O3
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Magnesite14.1.1.2MgCO3
Siderite14.1.1.3FeCO3
AB(XO3)2
Ankerite14.2.1.2Ca(Fe2+,Mg)(CO3)2
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Epsomite29.6.11.1MgSO4 · 7H2O
AB2(XO4)4·H2O
Pickeringite29.7.3.1MgAl2(SO4)4 · 22H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A2(XO4)Zq
Triplite41.6.1.2(Mn2+,Fe2+)2(PO4)(F,OH)
Group 43 - COMPOUND PHOSPHATES, ETC.
Hydrated Compound Phosphates, etc·, Containing Hydroxyl or Halogen
Diadochite43.5.2.1Fe3+2(PO4)(SO4)(OH) · 5H2O
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Almandine51.4.3a.2Fe2+3Al2(SiO4)3
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [4] and >[4] coordination
Staurolite52.2.3.1Fe2+2Al9Si4O23(OH)
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Zoisite58.2.1b.1Ca2Al3[Si2O7][SiO4]O(OH)
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with borate groups
Schorl61.3.1.10Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Diopside65.1.3a.1CaMgSi2O6
Hedenbergite65.1.3a.2CaFe2+Si2O6
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Cummingtonite66.1.1.1☐{Mg2}{Mg5}(Si8O22)(OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Chlorite Group'-
'Feldspar Group'-
'Garnet Group'-X3Z2(SiO4)3
'Hornblende'-

List of minerals for each chemical element

HHydrogen
H StauroliteFe22+Al9Si4O23(OH)
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
H PickeringiteMgAl2(SO4)4 · 22H2O
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
H Cummingtonite☐{Mg2}{Mg5}(Si8O22)(OH)2
H EpsomiteMgSO4 · 7H2O
H DiadochiteFe23+(PO4)(SO4)(OH) · 5H2O
H ZoisiteCa2Al3[Si2O7][SiO4]O(OH)
H Triplite(Mn2+,Fe2+)2(PO4)(F,OH)
BBoron
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
CCarbon
C AnkeriteCa(Fe2+,Mg)(CO3)2
C GraphiteC
C SideriteFeCO3
C MagnesiteMgCO3
C CalciteCaCO3
OOxygen
O QuartzSiO2
O AlmandineFe32+Al2(SiO4)3
O StauroliteFe22+Al9Si4O23(OH)
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O AnkeriteCa(Fe2+,Mg)(CO3)2
O MuscoviteKAl2(AlSi3O10)(OH)2
O BismiteBi2O3
O PickeringiteMgAl2(SO4)4 · 22H2O
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
O Garnet GroupX3Z2(SiO4)3
O Cummingtonite☐{Mg2}{Mg5}(Si8O22)(OH)2
O SideriteFeCO3
O MagnesiteMgCO3
O EpsomiteMgSO4 · 7H2O
O CalciteCaCO3
O DiadochiteFe23+(PO4)(SO4)(OH) · 5H2O
O DiopsideCaMgSi2O6
O HedenbergiteCaFe2+Si2O6
O ZoisiteCa2Al3[Si2O7][SiO4]O(OH)
O TitaniteCaTi(SiO4)O
O Triplite(Mn2+,Fe2+)2(PO4)(F,OH)
FFluorine
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
F Triplite(Mn2+,Fe2+)2(PO4)(F,OH)
NaSodium
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
MgMagnesium
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
Mg PickeringiteMgAl2(SO4)4 · 22H2O
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Mg Cummingtonite☐{Mg2}{Mg5}(Si8O22)(OH)2
Mg MagnesiteMgCO3
Mg EpsomiteMgSO4 · 7H2O
Mg DiopsideCaMgSi2O6
AlAluminium
Al AlmandineFe32+Al2(SiO4)3
Al StauroliteFe22+Al9Si4O23(OH)
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al PickeringiteMgAl2(SO4)4 · 22H2O
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Al ZoisiteCa2Al3[Si2O7][SiO4]O(OH)
SiSilicon
Si QuartzSiO2
Si AlmandineFe32+Al2(SiO4)3
Si StauroliteFe22+Al9Si4O23(OH)
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Si Garnet GroupX3Z2(SiO4)3
Si Cummingtonite☐{Mg2}{Mg5}(Si8O22)(OH)2
Si DiopsideCaMgSi2O6
Si HedenbergiteCaFe2+Si2O6
Si ZoisiteCa2Al3[Si2O7][SiO4]O(OH)
Si TitaniteCaTi(SiO4)O
PPhosphorus
P DiadochiteFe23+(PO4)(SO4)(OH) · 5H2O
P Triplite(Mn2+,Fe2+)2(PO4)(F,OH)
SSulfur
S PyriteFeS2
S ArsenopyriteFeAsS
S PickeringiteMgAl2(SO4)4 · 22H2O
S PyrrhotiteFe7S8
S ChalcopyriteCuFeS2
S SphaleriteZnS
S EpsomiteMgSO4 · 7H2O
S BismuthiniteBi2S3
S DiadochiteFe23+(PO4)(SO4)(OH) · 5H2O
KPotassium
K MuscoviteKAl2(AlSi3O10)(OH)2
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
CaCalcium
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
Ca CalciteCaCO3
Ca DiopsideCaMgSi2O6
Ca HedenbergiteCaFe2+Si2O6
Ca ZoisiteCa2Al3[Si2O7][SiO4]O(OH)
Ca TitaniteCaTi(SiO4)O
TiTitanium
Ti TitaniteCaTi(SiO4)O
MnManganese
Mn Triplite(Mn2+,Fe2+)2(PO4)(F,OH)
FeIron
Fe PyriteFeS2
Fe ArsenopyriteFeAsS
Fe AlmandineFe32+Al2(SiO4)3
Fe StauroliteFe22+Al9Si4O23(OH)
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe PyrrhotiteFe7S8
Fe ChalcopyriteCuFeS2
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Fe SideriteFeCO3
Fe DiadochiteFe23+(PO4)(SO4)(OH) · 5H2O
Fe HedenbergiteCaFe2+Si2O6
Fe Triplite(Mn2+,Fe2+)2(PO4)(F,OH)
CuCopper
Cu ChalcopyriteCuFeS2
ZnZinc
Zn SphaleriteZnS
AsArsenic
As ArsenopyriteFeAsS
AgSilver
Ag SilverAg
AuGold
Au GoldAu
BiBismuth
Bi BismiteBi2O3
Bi BismuthBi
Bi BismuthiniteBi2S3

Localities in this Region


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