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Isle Royale Mines, Houghton, Houghton Co., Michigan, USAi
Regional Level Types
Isle Royale MinesGroup of Mines
Houghton- not defined -
Houghton Co.County
MichiganState
USACountry

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Key
02724250015316798359819.jpg
View of the Houghton copper mining area, in 1910.

Isle Royale Mines, Houghton, Houghton Co., Michigan, USA
01061080015316798365600.jpg
View of the Houghton copper mining area, in 1910.

Isle Royale Mines, Houghton, Houghton Co., Michigan, USA
08657070015314295868560.jpg
View of the Houghton copper mining area, in 1910.

Isle Royale Mines, Houghton, Houghton Co., Michigan, USA
06468150015314302661449.jpg
View of the Houghton copper mining area, in 1910.

Isle Royale Mines, Houghton, Houghton Co., Michigan, USA
00564690015316798381749.jpg
View of the Houghton copper mining area, in 1910.

Isle Royale Mines, Houghton, Houghton Co., Michigan, USA
Latitude & Longitude (WGS84):
47° 5' 50'' North , 88° 34' 48'' West
Latitude & Longitude (decimal):
Locality type:
Group of Mines
Nearest Settlements:
PlacePopulationDistance
Houghton7,970 (2017)2.8km
Hancock4,555 (2017)3.3km
South Range746 (2017)5.7km
Dollar Bay1,082 (2017)5.8km
Hubbell946 (2017)14.2km


An underground copper mine consisting of 14 shafts located south of Houghton. The Ohio and Isle Royale Company was organized in 1852 to explore the island of Isle Royale in Lake Superior. The same year, the company transferred all operations to south of Houghton where three rich veins of copper were discovered. Five shafts were sunk in the area of prehistoric pits that also followed the veins. Much copper was found as several masses were discovered very close to the surface. In 1855, the company was reorganized into the Isle Royale Copper Company but closed just two years later in 1857. After this time, the mine was leased on tribute to the Mabbs Brothers. In 1862 the company bought the Webster Mining Company after which time the company worked the mine between 1863 and 1870, but closed it again. Again, the Mabbs Brothers worked the mine on tribute for several years. Between 1853 and 1885, the mine produced 8.8 million pounds of copper. In 1899, the mine reorganized once again into the Isle Royal Consolidated Copper Company. This new company was a merger of the old Isle Royal, Huron, Grand Portage, Frue, and Dodge Mines. With the additional mines, the “New” Isle Royal was now working 14 shafts on the Isle Royale Amygdaloid. In 1909, the Calumet and Hecla Mining Company bought the mine and operated it until the depression. The mine was reopened in 1932 and closed for good in 1949. Between 1901 and 1925, the mine produced over 171 million pounds of copper. Little remains of the original Isle Royal site. Most of the rock piles are gone, used for construction projects and road work. The Houghton Wal-Mart store is located on the former Huron Mine site, and other stores occupy the minesites of the Isle Royal. The only remaining rock pile is the Isle Royal No. 7, but this is privately owned as well. Wandering around the area one will run into small remnants of the mine. Minerals that can be found in these small rocky areas include copper, silver, copper wires, and quartz.

Regions containing this locality

North America PlateTectonic Plate
Keweenaw Peninsula, Michigan, USAPeninsula

Select Mineral List Type

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

38 valid minerals.

Detailed Mineral List:

Analcime
Formula: Na(AlSi2O6) · H2O
Reference: Rocks & Min.:58:109; Tschernich, R. (1992): Zeolites of the World, 66
Anhydrite
Formula: CaSO4
Reference: [Mineralogical Record - Vol 23 No. 2]
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Reference: Rocks & Min.:58:109.
'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
'Apophyllite'
Reference: Rocks & Min.:58:109.
Azurite
Formula: Cu3(CO3)2(OH)2
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
Baryte
Formula: BaSO4
Reference: Rocks & Min.:58:109.
Bornite
Formula: Cu5FeS4
Reference: Rocks & Min.:58:109.
Brucite
Formula: Mg(OH)2
Reference: Rocks & Min.:58:109.
Calcite
Formula: CaCO3
Reference: Rocks & Min.:58:109.
Chalcocite
Formula: Cu2S
Reference: Rocks & Min.:58:109.
Chalcopyrite
Formula: CuFeS2
Reference: Rocks & Min.:58:109.
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Reference: Rocks & Min.:58:109.
Clinochlore var: Pennine
Formula: Mg5Al(AlSi3O10)(OH)8
Reference: Rocks & Min.:58:109.
Copper
Formula: Cu
Reference: Rocks & Min.:58:109.
Cuprite
Formula: Cu2O
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
Datolite
Formula: CaB(SiO4)(OH)
Reference: Rocks & Min.:58:109.
Dolomite
Formula: CaMg(CO3)2
Reference: [Mineralogical Record - Vol 23 No. 2]
Domeykite
Formula: Cu3As
Reference: Rocks & Min.:58:109.
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Rocks & Min.:58:109.
Fluorapophyllite-(K)
Formula: KCa4(Si8O20)(F,OH) · 8H2O
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
Gypsum
Formula: CaSO4 · 2H2O
Reference: [Mineralogical Record - Vol 23 No. 2]
Hematite
Formula: Fe2O3
Reference: Rocks & Min.:58:109.
Heulandite-Ca
Formula: (Ca,Na)5(Si27Al9)O72 · 26H2O
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: Rocks & Min.:58:109.
'K Feldspar'
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
'K Feldspar var: Adularia'
Formula: KAlSi3O8
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
Laumontite
Formula: CaAl2Si4O12 · 4H2O
Reference: Rocks & Min.:58:109.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
Malachite
Formula: Cu2(CO3)(OH)2
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
Mesolite
Formula: Na2Ca2Si9Al6O30 · 8H2O
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
Mirabilite
Formula: Na2SO4 · 10H2O
Reference: Rocks & Min.:58:109.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Rocks & Min.:58:109.
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Rocks & Min.:58:109.
Natrolite
Formula: Na2Al2Si3O10 · 2H2O
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
Olivenite
Formula: Cu2(AsO4)(OH)
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
Powellite
Formula: Ca(MoO4)
Reference: Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1081; Rocks & Minerals: 58: 109.
Prehnite
Formula: Ca2Al2Si3O10(OH)2
Reference: Rocks & Min.:58:109.
'Pumpellyite'
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
Pyrite
Formula: FeS2
Reference: Rocks & Min.:58:109.
Pyrrhotite ?
Formula: Fe7S8
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
Quartz
Formula: SiO2
Reference: Rocks & Min.:58:109.
Saponite
Formula: Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Habit: Acicular crystals in cluster to 1 mm.
Colour: Usually white
Reference: Robinson, George, 2004, Mineralogy of Michigan, Rocks & Min.:58:109.
Siderite
Formula: FeCO3
Reference: [Mineralogical Record - Vol 23 No. 2]
Silver
Formula: Ag
Reference: Rocks & Min.:58:109.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Silver1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Domeykite2.AA.10bCu3As
Pyrite2.EB.05aFeS2
Pyrrhotite ?2.CC.10Fe7S8
Group 4 - Oxides and Hydroxides
Brucite4.FE.05Mg(OH)2
Cuprite4.AA.10Cu2O
Hematite4.CB.05Fe2O3
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Ankerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Azurite5.BA.05Cu3(CO3)2(OH)2
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
Malachite5.BA.10Cu2(CO3)(OH)2
Siderite5.AB.05FeCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Anhydrite7.AD.30CaSO4
Baryte7.AD.35BaSO4
Gypsum7.CD.40CaSO4 · 2H2O
Mirabilite7.CD.10Na2SO4 · 10H2O
Powellite7.GA.05Ca(MoO4)
Group 8 - Phosphates, Arsenates and Vanadates
Olivenite8.BB.30Cu2(AsO4)(OH)
Group 9 - Silicates
Analcime9.GB.05Na(AlSi2O6) · H2O
Clinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
var: Pennine9.EC.55Mg5Al(AlSi3O10)(OH)8
Datolite9.AJ.20CaB(SiO4)(OH)
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fluorapophyllite-(K)9.EA.15KCa4(Si8O20)(F,OH) · 8H2O
Heulandite-Ca9.GE.05(Ca,Na)5(Si27Al9)O72 · 26H2O
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Laumontite9.GB.10CaAl2Si4O12 · 4H2O
Mesolite9.GA.05Na2Ca2Si9Al6O30 · 8H2O
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Natrolite9.GA.05Na2Al2Si3O10 · 2H2O
Prehnite9.DP.20Ca2Al2Si3O10(OH)2
Saponite9.EC.45Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Unclassified Minerals, Rocks, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Apophyllite'-
'K Feldspar'-
'var: Adularia'-KAlSi3O8
'Pumpellyite'-

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
Silver1.1.1.2Ag
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 3:1
Domeykite2.2.2.1Cu3As
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
Pyrrhotite ?2.8.10.1Fe7S8
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X
Cuprite4.1.1.1Cu2O
A2X3
Hematite4.3.1.2Fe2O3
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
X(OH)2
Brucite6.2.1.1Mg(OH)2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Siderite14.1.1.3FeCO3
AB(XO3)2
Ankerite14.2.1.2Ca(Fe2+,Mg)(CO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Azurite16a.2.1.1Cu3(CO3)2(OH)2
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Anhydrite28.3.2.1CaSO4
Baryte28.3.1.1BaSO4
Group 29 - HYDRATED ACID AND NORMAL SULFATES
A2XO4·xH2O
Mirabilite29.2.2.1Na2SO4 · 10H2O
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A2(XO4)Zq
Olivenite41.6.6.1Cu2(AsO4)(OH)
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Powellite48.1.2.2Ca(MoO4)
Group 54 - NESOSILICATES Borosilicates and Some Beryllosilicates
Borosilicates and Some Beryllosilicates with B in [4] coordination
Datolite54.2.1a.1CaB(SiO4)(OH)
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 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Sheets of 6-membered rings with 2:1 clays
Saponite71.3.1b.2Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
Clinochlore71.4.1.4Mg5Al(AlSi3O10)(OH)8
Group 72 - PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 4-membered rings
Prehnite72.1.3.1Ca2Al2Si3O10(OH)2
Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 3-, 4-, or 5-membered rings and 8-membered rings
Fluorapophyllite-(K)72.3.1.1KCa4(Si8O20)(F,OH) · 8H2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Analcime77.1.1.1Na(AlSi2O6) · H2O
Heulandite-Ca77.1.4.1(Ca,Na)5(Si27Al9)O72 · 26H2O
Laumontite77.1.1.4CaAl2Si4O12 · 4H2O
Mesolite77.1.5.4Na2Ca2Si9Al6O30 · 8H2O
Natrolite77.1.5.1Na2Al2Si3O10 · 2H2O
Unclassified Minerals, Mixtures, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Apophyllite'-
Clinochlore
var: Pennine
-Mg5Al(AlSi3O10)(OH)8
'K Feldspar'-
'var: Adularia'-KAlSi3O8
Kaolinite-Al2(Si2O5)(OH)4
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2
'Pumpellyite'-

List of minerals for each chemical element

HHydrogen
H SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
H GypsumCaSO4 · 2H2O
H Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
H AnalcimeNa(AlSi2O6) · H2O
H BruciteMg(OH)2
H Clinochlore (var: Pennine)Mg5Al(AlSi3O10)(OH)8
H DatoliteCaB(SiO4)(OH)
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H KaoliniteAl2(Si2O5)(OH)4
H LaumontiteCaAl2Si4O12 · 4H2O
H MirabiliteNa2SO4 · 10H2O
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H PrehniteCa2Al2Si3O10(OH)2
H OliveniteCu2(AsO4)(OH)
H ApatiteCa5(PO4)3(Cl/F/OH)
H NatroliteNa2Al2Si3O10 · 2H2O
H AzuriteCu3(CO3)2(OH)2
H Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
H MalachiteCu2(CO3)(OH)2
H MesoliteNa2Ca2Si9Al6O30 · 8H2O
H ClinochloreMg5Al(AlSi3O10)(OH)8
H MuscoviteKAl2(AlSi3O10)(OH)2
BBoron
B DatoliteCaB(SiO4)(OH)
CCarbon
C DolomiteCaMg(CO3)2
C SideriteFeCO3
C AnkeriteCa(Fe2+,Mg)(CO3)2
C CalciteCaCO3
C AzuriteCu3(CO3)2(OH)2
C MalachiteCu2(CO3)(OH)2
OOxygen
O SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
O PowelliteCa(MoO4)
O AnhydriteCaSO4
O DolomiteCaMg(CO3)2
O GypsumCaSO4 · 2H2O
O Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
O SideriteFeCO3
O AnalcimeNa(AlSi2O6) · H2O
O AnkeriteCa(Fe2+,Mg)(CO3)2
O BaryteBaSO4
O BruciteMg(OH)2
O CalciteCaCO3
O Clinochlore (var: Pennine)Mg5Al(AlSi3O10)(OH)8
O DatoliteCaB(SiO4)(OH)
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O HematiteFe2O3
O KaoliniteAl2(Si2O5)(OH)4
O LaumontiteCaAl2Si4O12 · 4H2O
O MirabiliteNa2SO4 · 10H2O
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O PrehniteCa2Al2Si3O10(OH)2
O QuartzSiO2
O OliveniteCu2(AsO4)(OH)
O ApatiteCa5(PO4)3(Cl/F/OH)
O NatroliteNa2Al2Si3O10 · 2H2O
O K Feldspar (var: Adularia)KAlSi3O8
O AzuriteCu3(CO3)2(OH)2
O Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
O MagnetiteFe2+Fe23+O4
O MalachiteCu2(CO3)(OH)2
O CupriteCu2O
O MesoliteNa2Ca2Si9Al6O30 · 8H2O
O ClinochloreMg5Al(AlSi3O10)(OH)8
O MuscoviteKAl2(AlSi3O10)(OH)2
FFluorine
F ApatiteCa5(PO4)3(Cl/F/OH)
F Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
NaSodium
Na SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Na Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
Na AnalcimeNa(AlSi2O6) · H2O
Na MirabiliteNa2SO4 · 10H2O
Na NatroliteNa2Al2Si3O10 · 2H2O
Na MesoliteNa2Ca2Si9Al6O30 · 8H2O
MgMagnesium
Mg SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Mg DolomiteCaMg(CO3)2
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
Mg BruciteMg(OH)2
Mg Clinochlore (var: Pennine)Mg5Al(AlSi3O10)(OH)8
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
AlAluminium
Al SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Al Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
Al AnalcimeNa(AlSi2O6) · H2O
Al Clinochlore (var: Pennine)Mg5Al(AlSi3O10)(OH)8
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al KaoliniteAl2(Si2O5)(OH)4
Al LaumontiteCaAl2Si4O12 · 4H2O
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al PrehniteCa2Al2Si3O10(OH)2
Al NatroliteNa2Al2Si3O10 · 2H2O
Al K Feldspar (var: Adularia)KAlSi3O8
Al MesoliteNa2Ca2Si9Al6O30 · 8H2O
Al ClinochloreMg5Al(AlSi3O10)(OH)8
Al MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Si SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Si Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
Si AnalcimeNa(AlSi2O6) · H2O
Si Clinochlore (var: Pennine)Mg5Al(AlSi3O10)(OH)8
Si DatoliteCaB(SiO4)(OH)
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si KaoliniteAl2(Si2O5)(OH)4
Si LaumontiteCaAl2Si4O12 · 4H2O
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si PrehniteCa2Al2Si3O10(OH)2
Si QuartzSiO2
Si NatroliteNa2Al2Si3O10 · 2H2O
Si K Feldspar (var: Adularia)KAlSi3O8
Si Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
Si MesoliteNa2Ca2Si9Al6O30 · 8H2O
Si ClinochloreMg5Al(AlSi3O10)(OH)8
Si MuscoviteKAl2(AlSi3O10)(OH)2
PPhosphorus
P ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
S AnhydriteCaSO4
S GypsumCaSO4 · 2H2O
S BaryteBaSO4
S BorniteCu5FeS4
S ChalcociteCu2S
S ChalcopyriteCuFeS2
S MirabiliteNa2SO4 · 10H2O
S PyriteFeS2
S PyrrhotiteFe7S8
ClChlorine
Cl ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K K Feldspar (var: Adularia)KAlSi3O8
K Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Ca PowelliteCa(MoO4)
Ca AnhydriteCaSO4
Ca DolomiteCaMg(CO3)2
Ca GypsumCaSO4 · 2H2O
Ca Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
Ca CalciteCaCO3
Ca DatoliteCaB(SiO4)(OH)
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca LaumontiteCaAl2Si4O12 · 4H2O
Ca PrehniteCa2Al2Si3O10(OH)2
Ca ApatiteCa5(PO4)3(Cl/F/OH)
Ca Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
Ca MesoliteNa2Ca2Si9Al6O30 · 8H2O
FeIron
Fe SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Fe SideriteFeCO3
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe BorniteCu5FeS4
Fe ChalcopyriteCuFeS2
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe HematiteFe2O3
Fe PyriteFeS2
Fe MagnetiteFe2+Fe23+O4
Fe PyrrhotiteFe7S8
CuCopper
Cu BorniteCu5FeS4
Cu ChalcociteCu2S
Cu ChalcopyriteCuFeS2
Cu CopperCu
Cu DomeykiteCu3As
Cu OliveniteCu2(AsO4)(OH)
Cu AzuriteCu3(CO3)2(OH)2
Cu MalachiteCu2(CO3)(OH)2
Cu CupriteCu2O
AsArsenic
As DomeykiteCu3As
As OliveniteCu2(AsO4)(OH)
MoMolybdenum
Mo PowelliteCa(MoO4)
AgSilver
Ag SilverAg
BaBarium
Ba BaryteBaSO4

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Dana, E.S. (1892) System of Mineralogy, 6th. Edition, New York: 1086.
Butler, B.S., and Burbank, W.S. (1929), The Copper Deposits of Michigan. U.S. Geological Survey. Professional Paper 144. 238 pp.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1081.
Rocks & Minerals (1983): 58: 109.
Kilpela, T (1995), The Hard Rock Mining Era in the Copper Country. 89 pp.
The Copper Country Rock & Mineral Club (2001), Red Gold and Tarnished Silver, 2nd Ed., 44 pp.
DeGood, L. (2011), Michigan Copper Mining Stocks and Bonds. 401 pp.
Kaminski-Hamka, T. (2011), Copper Mines of Houghton County, Michigan. Copperlady Press, 120 pp.

Localities in this Region


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