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Empire Copper Mine (White Knob; Empire Copper Company; Idaho Metals Company), Mackay Mining District (Alder Creek Mining District; White Knob Mining District), Custer Co., Idaho, USAi
Regional Level Types
Empire Copper Mine (White Knob; Empire Copper Company; Idaho Metals Company)Mine
Mackay Mining District (Alder Creek Mining District; White Knob Mining District)Mining District
Custer Co.County
IdahoState
USACountry

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Key
Latitude & Longitude (WGS84):
43° 53' 25'' North , 113° 40' 31'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Mackay476 (2017)5.6km
Moore164 (2017)30.2km
Arco857 (2017)41.3km


Cu-Zn skarn deposit. The largest deposit in the Alder Creek mining district.
Located 5.3 km SW of the town of Mackay.
The mine includes surface and underground workings. It was operated between 1902 and 1930 and intermittently since then. Total recorded production between 1902 and 1975 was 921,077 tons of ore. From this were obtained 41,421 ounces of gold, 1,294,531 ounces of silver, 61,689,291 pounds of copper, 24,110 pounds of lead, and 908,078 pounds of zinc (Mitchell, 1997).

Select Mineral List Type

Standard Detailed Gallery Strunz Dana Chemical Elements

Commodity List

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


Mineral List


28 valid minerals.

Detailed Mineral List:

Aurichalcite
Formula: (Zn,Cu)5(CO3)2(OH)6
Reference: R&M 70:4 pp 242-263
Azurite
Formula: Cu3(CO3)2(OH)2
Reference: USGS Prof Paper 610 "Principal Gold Producing Districts of the United States"
Bornite
Formula: Cu5FeS4
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Calamine'
Reference: Farwell, F. W.; Full, R. P. (1944) USGS OFR 44-17.
Calcite
Formula: CaCO3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Cerussite
Formula: PbCO3
Reference: Farwell, F. W.; Full, R. P. (1944) USGS OFR 44-17.
Chalcocite
Formula: Cu2S
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Chalcopyrite
Formula: CuFeS2
Reference: USGS Prof Paper 610 "Principal Gold Producing Districts of the United States"
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Reference: USGS Prof Paper 610 "Principal Gold Producing Districts of the United States"
Copper
Formula: Cu
Reference: Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated
Covellite
Formula: CuS
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Cuprite
Formula: Cu2O
Reference: USGS Prof Paper 610 "Principal Gold Producing Districts of the United States"
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Fluorite
Formula: CaF2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Galena
Formula: PbS
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: USGS Prof Paper 610 "Principal Gold Producing Districts of the United States"
Gypsum
Formula: CaSO4 · 2H2O
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Hematite
Formula: Fe2O3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Hematite var. Specularite
Formula: Fe2O3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Hemimorphite
Formula: Zn4Si2O7(OH)2 · H2O
Reference: R&M 70:4 pp 242-263
Magnetite
Formula: Fe2+Fe3+2O4
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Malachite
Formula: Cu2(CO3)(OH)2
Reference: USGS Prof Paper 610 "Principal Gold Producing Districts of the United States"
Molybdenite
Formula: MoS2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Pyrite
Formula: FeS2
Reference: USGS Prof Paper 610 "Principal Gold Producing Districts of the United States"
'Pyroxene Group'
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Pyrrhotite
Formula: Fe1-xS
Reference: USGS Prof Paper 610 "Principal Gold Producing Districts of the United States"
Quartz
Formula: SiO2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Scheelite
Formula: Ca(WO4)
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Smithsonite
Formula: ZnCO3
Reference: Farwell, F. W.; Full, R. P. (1944) USGS OFR 44-17.
Sphalerite
Formula: ZnS
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Tenorite
Formula: CuO
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Tetrahedrite Subgroup'
Formula: Cu6(Cu4X2+2)Sb4S12S
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Wollastonite
Formula: CaSiO3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Covellite2.CA.05aCuS
Galena2.CD.10PbS
Molybdenite2.EA.30MoS2
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe1-xS
Sphalerite2.CB.05aZnS
'Tetrahedrite Subgroup'2.GB.05Cu6(Cu4X2+2)Sb4S12S
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Cuprite4.AA.10Cu2O
Hematite4.CB.05Fe2O3
var. Specularite4.CB.05Fe2O3
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
Tenorite4.AB.10CuO
Group 5 - Nitrates and Carbonates
Aurichalcite5.BA.15(Zn,Cu)5(CO3)2(OH)6
Azurite5.BA.05Cu3(CO3)2(OH)2
Calcite5.AB.05CaCO3
Cerussite5.AB.15PbCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Smithsonite5.AB.05ZnCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Gypsum7.CD.40CaSO4 · 2H2O
Scheelite7.GA.05Ca(WO4)
Group 9 - Silicates
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Hemimorphite9.BD.10Zn4Si2O7(OH)2 · H2O
Wollastonite9.DG.05CaSiO3
Unclassified Minerals, Rocks, etc.
'Calamine'-
'Garnet Group'-X3Z2(SiO4)3
'Pyroxene Group'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Copper1.1.1.3Cu
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Chalcocite2.4.7.1Cu2S
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmXp, with m:p = 1:1
Covellite2.8.12.1CuS
Galena2.8.1.1PbS
Pyrrhotite2.8.10.1Fe1-xS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Molybdenite2.12.10.1MoS2
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
3 <ø < 4
'Tetrahedrite Subgroup'3.3.6.1Cu6(Cu4X2+2)Sb4S12S
Group 4 - SIMPLE OXIDES
A2X
Cuprite4.1.1.1Cu2O
AX
Tenorite4.2.3.1CuO
A2X3
Hematite4.3.1.2Fe2O3
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Cerussite14.1.3.4PbCO3
Smithsonite14.1.1.6ZnCO3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Azurite16a.2.1.1Cu3(CO3)2(OH)2
Malachite16a.3.1.1Cu2(CO3)(OH)2
Aurichalcite16a.4.2.1(Zn,Cu)5(CO3)2(OH)6
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Scheelite48.1.2.1Ca(WO4)
Group 56 - SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
Si2O7 Groups and O, OH, F, and H2O with cations in [4] coordination
Hemimorphite56.1.2.1Zn4Si2O7(OH)2 · H2O
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)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=3
Wollastonite65.2.1.1cCaSiO3
Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined strips
Chrysocolla74.3.2.1Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Calamine'-
'Garnet Group'-X3Z2(SiO4)3
Hematite
var. Specularite
-Fe2O3
'Pyroxene Group'-

List of minerals for each chemical element

HHydrogen
H Aurichalcite(Zn,Cu)5(CO3)2(OH)6
H HemimorphiteZn4Si2O7(OH)2 · H2O
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
H AzuriteCu3(CO3)2(OH)2
H MalachiteCu2(CO3)(OH)2
H GypsumCaSO4 · 2H2O
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
CCarbon
C Aurichalcite(Zn,Cu)5(CO3)2(OH)6
C AzuriteCu3(CO3)2(OH)2
C MalachiteCu2(CO3)(OH)2
C CalciteCaCO3
C CerussitePbCO3
C SmithsoniteZnCO3
OOxygen
O Aurichalcite(Zn,Cu)5(CO3)2(OH)6
O HemimorphiteZn4Si2O7(OH)2 · H2O
O Garnet GroupX3Z2(SiO4)3
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
O AzuriteCu3(CO3)2(OH)2
O MalachiteCu2(CO3)(OH)2
O CupriteCu2O
O TenoriteCuO
O ScheeliteCa(WO4)
O CalciteCaCO3
O Hematite var. SpeculariteFe2O3
O GypsumCaSO4 · 2H2O
O WollastoniteCaSiO3
O MagnetiteFe2+Fe23+O4
O QuartzSiO2
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O HematiteFe2O3
O CerussitePbCO3
O SmithsoniteZnCO3
FFluorine
F FluoriteCaF2
AlAluminium
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
SiSilicon
Si HemimorphiteZn4Si2O7(OH)2 · H2O
Si Garnet GroupX3Z2(SiO4)3
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Si WollastoniteCaSiO3
Si QuartzSiO2
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
SSulfur
S ChalcopyriteCuFeS2
S PyriteFeS2
S PyrrhotiteFe1-xS
S MolybdeniteMoS2
S CovelliteCuS
S GalenaPbS
S Tetrahedrite SubgroupCu6(Cu4X22+)Sb4S12S
S BorniteCu5FeS4
S ChalcociteCu2S
S SphaleriteZnS
S GypsumCaSO4 · 2H2O
CaCalcium
Ca FluoriteCaF2
Ca ScheeliteCa(WO4)
Ca CalciteCaCO3
Ca GypsumCaSO4 · 2H2O
Ca WollastoniteCaSiO3
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
FeIron
Fe ChalcopyriteCuFeS2
Fe PyriteFeS2
Fe PyrrhotiteFe1-xS
Fe BorniteCu5FeS4
Fe Hematite var. SpeculariteFe2O3
Fe MagnetiteFe2+Fe23+O4
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe HematiteFe2O3
CuCopper
Cu Aurichalcite(Zn,Cu)5(CO3)2(OH)6
Cu ChalcopyriteCuFeS2
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Cu AzuriteCu3(CO3)2(OH)2
Cu MalachiteCu2(CO3)(OH)2
Cu CupriteCu2O
Cu CovelliteCuS
Cu Tetrahedrite SubgroupCu6(Cu4X22+)Sb4S12S
Cu TenoriteCuO
Cu BorniteCu5FeS4
Cu ChalcociteCu2S
Cu CopperCu
ZnZinc
Zn Aurichalcite(Zn,Cu)5(CO3)2(OH)6
Zn HemimorphiteZn4Si2O7(OH)2 · H2O
Zn SphaleriteZnS
Zn SmithsoniteZnCO3
MoMolybdenum
Mo MolybdeniteMoS2
SbAntimony
Sb Tetrahedrite SubgroupCu6(Cu4X22+)Sb4S12S
WTungsten
W ScheeliteCa(WO4)
PbLead
Pb GalenaPbS
Pb CerussitePbCO3

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Economic Geology 103 (2008) 909-938.
Nelson, W. H., And Ross, C. P. (1968), Geology Of Part Of The Alder Creek Mining District, Custer County, Idaho: USGS Bull. 1252-A, 30 P.
Mitchell, Victoria (1997) History of Selected Mines in the Alder Creek Mining District, Custer County, Idaho, Staff Report 97-2, Idaho Geological Survey. (Online at: www.idahogeology.org/pub/Staff_Reports/1997/S-97-2.pdf)
Farwell, F. W., Full, R. P. (1944) Geology of the Empire Copper Mine near Mackay, Idaho; USGS Open File Report 44-17.

Other Regions, Features and Areas containing this locality

North America
North America PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
 
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