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St. Louis Mine Exploration, Schoolcraft Township, Houghton County, Michigan, USAi
Regional Level Types
St. Louis Mine ExplorationMine
Schoolcraft TownshipTownship
Houghton CountyCounty
MichiganState
USACountry

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Latitude & Longitude (WGS84):
47° 13' 56'' North , 88° 24' 35'' West
Latitude & Longitude (decimal):
47.23224,-88.40974
GeoHash:
G#: f03hsnmgx
GRN:
N32W44
Type:
Mine
KΓΆppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Laurium1,941 (2017)2.6km
Calumet703 (2017)3.7km
Lake Linden989 (2017)4.2km
Copper City187 (2017)6.0km
Hubbell946 (2017)6.7km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Copper Country Rock and Mineral ClubDollar Bay, Michigan15km
Mindat Locality ID:
124024
Long-form identifier:
mindat:1:2:124024:8
GUID (UUID V4):
4c6ddbde-82e0-42aa-ab91-2d471454a2b7


An underground copper mine consisting of two shafts located near Laurium. The St. Louis Copper Company was organized in 1864 to explore an area first worked by the New York and Michigan Mining Company in 1844. The St. Louis worked a conglomerate of the same name between 1865 and 1879. Beginning in 1880, the mine was worked by tributors on and off until 1898 when Calumet and Hecla bought the property. The last company report in 1911 details a shaft that was sunk on an amygdaloid that crossed the property. It is believed the mine ceased operations shortly after this time. The rock piles from the mine can be easily accessed off a dirt road. Minerals that can be found include copper, quartz, and agates.

Mineralization is hosted in the Portage Lake Volcanics (basalt).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

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


Mineral List


14 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

β“˜ Calcite
Formula: CaCO3
β“˜ Chalcocite
Formula: Cu2S
β“˜ Chamosite
Formula: (Fe2+)5Al(Si,Al)4O10(OH,O)8
β“˜ 'Chlorite Group'
β“˜ Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
β“˜ Copper
Formula: Cu
β“˜ Cuprite
Formula: Cu2O
β“˜ Datolite
Formula: CaB(SiO4)(OH)
β“˜ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜ Hematite
Formula: Fe2O3
β“˜ Laumontite
Formula: CaAl2Si4O12 · 4H2O
β“˜ Malachite
Formula: Cu2(CO3)(OH)2
β“˜ Microcline
Formula: K(AlSi3O8)
β“˜ 'Pumpellyite Subgroup'
Formula: Ca2XAl2[Si2O6(OH)][SiO4](OH)2A
β“˜ Quartz
Formula: SiO2
β“˜ Quartz var. Agate
β“˜ Quartz var. Chalcedony
Formula: SiO2
β“˜ Quartz var. Lake Superior Agate
Formula: SiO2
β“˜ Saponite
Formula: Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Description: Occurs as a soft, greasy, late stage mineral throughout the Michigan Copper Range. (many colors)

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
β“˜Copper1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
β“˜Chalcocite2.BA.05Cu2S
Group 4 - Oxides and Hydroxides
β“˜Cuprite4.AA.10Cu2O
β“˜Hematite4.CB.05Fe2O3
β“˜Quartz
var. Agate		4.DA.05SiO2
β“˜4.DA.05SiO2
β“˜var. Lake Superior Agate4.DA.05SiO2
β“˜var. Chalcedony4.DA.05SiO2
Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3
β“˜Malachite5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
β“˜Datolite9.AJ.20CaB(SiO4)(OH)
β“˜Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜Saponite9.EC.45Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 Β· nH2O
β“˜Clinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
β“˜Chamosite9.EC.55(Fe2+)5Al(Si,Al)4O10(OH,O)8
β“˜Microcline9.FA.30K(AlSi3O8)
β“˜Laumontite9.GB.10CaAl2Si4O12 Β· 4H2O
Unclassified
β“˜'Chlorite Group'-
β“˜'Pumpellyite Subgroup'-Ca2XAl2[Si2O6(OH)][SiO4](OH)2A

List of minerals for each chemical element

HHydrogen
Hβ“˜ Chamosite(Fe2+)5Al(Si,Al)4O10(OH,O)8
Hβ“˜ ClinochloreMg5Al(AlSi3O10)(OH)8
Hβ“˜ DatoliteCaB(SiO4)(OH)
Hβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hβ“˜ LaumontiteCaAl2Si4O12 · 4H2O
Hβ“˜ MalachiteCu2(CO3)(OH)2
Hβ“˜ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Hβ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
BBoron
Bβ“˜ DatoliteCaB(SiO4)(OH)
CCarbon
Cβ“˜ CalciteCaCO3
Cβ“˜ MalachiteCu2(CO3)(OH)2
OOxygen
Oβ“˜ CalciteCaCO3
Oβ“˜ Quartz var. ChalcedonySiO2
Oβ“˜ Chamosite(Fe2+)5Al(Si,Al)4O10(OH,O)8
Oβ“˜ ClinochloreMg5Al(AlSi3O10)(OH)8
Oβ“˜ CupriteCu2O
Oβ“˜ DatoliteCaB(SiO4)(OH)
Oβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oβ“˜ HematiteFe2O3
Oβ“˜ LaumontiteCaAl2Si4O12 · 4H2O
Oβ“˜ MalachiteCu2(CO3)(OH)2
Oβ“˜ MicroclineK(AlSi3O8)
Oβ“˜ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Oβ“˜ QuartzSiO2
Oβ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Oβ“˜ Quartz var. Lake Superior AgateSiO2
MgMagnesium
Mgβ“˜ ClinochloreMg5Al(AlSi3O10)(OH)8
Mgβ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
AlAluminium
Alβ“˜ Chamosite(Fe2+)5Al(Si,Al)4O10(OH,O)8
Alβ“˜ ClinochloreMg5Al(AlSi3O10)(OH)8
Alβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alβ“˜ LaumontiteCaAl2Si4O12 · 4H2O
Alβ“˜ MicroclineK(AlSi3O8)
Alβ“˜ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Alβ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
SiSilicon
Siβ“˜ Quartz var. ChalcedonySiO2
Siβ“˜ Chamosite(Fe2+)5Al(Si,Al)4O10(OH,O)8
Siβ“˜ ClinochloreMg5Al(AlSi3O10)(OH)8
Siβ“˜ DatoliteCaB(SiO4)(OH)
Siβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siβ“˜ LaumontiteCaAl2Si4O12 · 4H2O
Siβ“˜ MicroclineK(AlSi3O8)
Siβ“˜ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Siβ“˜ QuartzSiO2
Siβ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Siβ“˜ Quartz var. Lake Superior AgateSiO2
SSulfur
Sβ“˜ ChalcociteCu2S
KPotassium
Kβ“˜ MicroclineK(AlSi3O8)
CaCalcium
Caβ“˜ CalciteCaCO3
Caβ“˜ DatoliteCaB(SiO4)(OH)
Caβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caβ“˜ LaumontiteCaAl2Si4O12 · 4H2O
Caβ“˜ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Caβ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
FeIron
Feβ“˜ Chamosite(Fe2+)5Al(Si,Al)4O10(OH,O)8
Feβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feβ“˜ HematiteFe2O3
Feβ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
CuCopper
Cuβ“˜ ChalcociteCu2S
Cuβ“˜ CupriteCu2O
Cuβ“˜ CopperCu
Cuβ“˜ MalachiteCu2(CO3)(OH)2

Mindat Articles

St. Louis Mine, Houghton Co. Michigan by Larry Maltby


Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate
USA

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.

References

Stevens, H.J. (1902) The Copper Handbook, Vol 2. Mining Gazette Press, Houghton, Michigan. 494 pages.
Butler, B.S., Burbank, W.S. (1929) The Copper Deposits of Michigan. U.S. Geological Survey. Professional Paper 144. 238 pages.
Michigan Copper Company Ltd. (1982) Michigan Copper Sulfide Project, Keweenaw Peninsula: Unpublished company document, 21 pages.
The Copper Country Rock & Mineral Club (2001) Red Gold and Tarnished Silver, 2nd edition. Self-Published. 44 pages.
Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
Kaminski-Hamka, T. (2011) Copper Mines of Houghton County, Michigan. Copperlady Press. 120 pages.
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