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Lake Mine (Great Western Mine; Bohemian), Mass City, Ontonagon Co., Michigan, USAi
Regional Level Types
Lake Mine (Great Western Mine; Bohemian)Mine
Mass CityCity
Ontonagon Co.County
MichiganState
USACountry

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Key
Latitude & Longitude (WGS84):
46° 46' 1'' North , 89° 2' 15'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Ontonagon1,324 (2017)24.0km
South Range746 (2017)45.1km


An underground copper mine consisting of one shaft near Mass City, MI. The Lake Copper Co. was organized in 1905 on the original Belt Mine property. Work was started in 1909 and continued until 1919, when the mine closed for good. The mine produced approx. 7.3 million lbs. of refined copper. Some copper, datolite, and silver can be found on the mine piles.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


7 valid minerals.

Detailed Mineral List:

Calcite
Formula: CaCO3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Chlorite Group'
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Copper
Formula: Cu
Reference: Rocks & Min.: 58:112.
Datolite
Formula: CaB(SiO4)(OH)
Reference: Rocks & Minerals 80:3 pp154-177; Rosemeyer, T. 2011 New from the Keweenaw: Part 4 - Recent Mineral Finds in Michigan's Copper Country. Rocks & Minerals 86:205-227
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Gypsum
Formula: CaSO4 · 2H2O
Reference: Rocks & Min.: 58:112.
Gypsum var: Selenite
Formula: CaSO4 · 2H2O
Reference: Rocks & Min.: 58:112.
'K Feldspar'
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Pumpellyite-(Mg)
Formula: Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Quartz
Formula: SiO2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Gypsum7.CD.40CaSO4 · 2H2O
var: Selenite7.CD.40CaSO4 · 2H2O
Group 9 - Silicates
Datolite9.AJ.20CaB(SiO4)(OH)
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Pumpellyite-(Mg)9.BG.20Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
'K Feldspar'-

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 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
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)
Pumpellyite-(Mg)58.2.2.7Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Chlorite Group'-
Gypsum
var: Selenite
-CaSO4 · 2H2O
'K Feldspar'-

List of minerals for each chemical element

HHydrogen
H Gypsum (var: Selenite)CaSO4 · 2H2O
H DatoliteCaB(SiO4)(OH)
H Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H GypsumCaSO4 · 2H2O
BBoron
B DatoliteCaB(SiO4)(OH)
CCarbon
C CalciteCaCO3
OOxygen
O Gypsum (var: Selenite)CaSO4 · 2H2O
O DatoliteCaB(SiO4)(OH)
O CalciteCaCO3
O Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O QuartzSiO2
O GypsumCaSO4 · 2H2O
MgMagnesium
Mg Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
AlAluminium
Al Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
SiSilicon
Si DatoliteCaB(SiO4)(OH)
Si Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si QuartzSiO2
SSulfur
S Gypsum (var: Selenite)CaSO4 · 2H2O
S GypsumCaSO4 · 2H2O
CaCalcium
Ca Gypsum (var: Selenite)CaSO4 · 2H2O
Ca DatoliteCaB(SiO4)(OH)
Ca CalciteCaCO3
Ca Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca GypsumCaSO4 · 2H2O
FeIron
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
CuCopper
Cu CopperCu

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Rocks & Minerals: 58:112
Butler, B.S., and Burbank, W.S., 1929, The Copper Deposits of Michigan. U.S. Geological Survey. Professional Paper 144. 238 pp.
The Copper Country Rock & Mineral Club, 2001, Red Gold and Tarnished Silver, 2nd Ed., 44 pp.

Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate
USA

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