SUPPORT US. If mindat.org is important to you, click here to donate to our Fall 2019 fundraiser!
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography

St. Louis Mine Exploration, Laurium, Houghton Co., Michigan, USAi
Regional Level Types
St. Louis Mine Exploration- not defined -
Laurium- not defined -
Houghton Co.County
MichiganState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
Key
07044960014951555102589.jpg
Stratigreaphic Section of the Portage Lake Volcanics

St. Louis Mine Exploration, Laurium, Houghton Co., Michigan, USA
07044960014951555102589.jpg
Stratigreaphic Section of the Portage Lake Volcanics

St. Louis Mine Exploration, Laurium, Houghton Co., Michigan, USA
Latitude & Longitude (WGS84):
47° 13' 50'' North , 88° 24' 45'' West
Latitude & Longitude (decimal):
Nearest Settlements:
PlacePopulationDistance
Laurium1,941 (2017)2.4km
Calumet703 (2017)3.6km
Lake Linden989 (2017)4.1km
Copper City187 (2017)6.2km
Hubbell946 (2017)6.5km


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 Strunz Dana Chemical Elements

Mineral List


14 valid minerals.

Detailed Mineral List:

Calcite
Formula: CaCO3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Chalcocite
Formula: Cu2S
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Chamosite
Formula: (Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Reference: Mineralogy of Michigan, Heinrich, Robinson. Chlorite group minerals in the Keweenaw are in the chamosite- clinochlore series with the dark green to black being chamosite and the light tan to gray being clinochlore. Personal communication with George Robinson.
'Chlorite Group'
Reference: Mineralogy of Michigan, Heinrich, Robinson. Chlorite group minerals in the Keweenaw are in the chamosite- clinochlore series with the dark green to black being chamosite and the light tan to gray being clinochlore. Personal communication with George Robinson.
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Reference: Mineralogy of Michigan, Heinrich, Robinson. Chlorite group minerals in the Keweenaw are in the chamosite- clinochlore series with the dark green to black being chamosite and the light tan to gray being clinochlore. Personal communication with George Robinson.
Copper
Formula: Cu
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Cuprite
Formula: Cu2O
Reference: Larry Maltby, Obvious red crystals on copper;
Datolite
Formula: CaB(SiO4)(OH)
Reference: Red Gold and Tarnished Silver, 2001, CCRMC
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Hematite
Formula: Fe2O3
Reference: History and Mineralogy of the St. Louis Mine, Houghton Co. Michigan
Laumontite
Formula: CaAl2Si4O12 · 4H2O
Reference: History and Mineralogy of the St. Louis Mine, Houghton Co. Michigan
Malachite
Formula: Cu2(CO3)(OH)2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Microcline
Formula: K(AlSi3O8)
Reference: History and Mineralogy of the St. Louis Mine, Houghton Co. Michigan
'Pumpellyite'
Reference: History and Mineralogy of the St. Louis Mine, Houghton Co. Michigan
Quartz
Formula: SiO2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Quartz var: Agate
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
Quartz var: Chalcedony
Formula: SiO2
Reference: History and Mineralogy of the St. Louis Mine, Houghton Co. Michigan
Quartz var: Lake Superior Agate
Formula: SiO2
Reference: Personally collected by Paul Brandes in 2009.
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)
Reference: Mineralogy of Michigan, Heinrich-Robinson.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
Chalcocite2.BA.05Cu2S
Group 4 - Oxides and Hydroxides
Cuprite4.AA.10Cu2O
Hematite4.CB.05Fe2O3
Quartz4.DA.05SiO2
var: Agate4.DA.05SiO2
var: Chalcedony4.DA.05SiO2
var: Lake Superior Agate4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
Chamosite9.EC.55(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Clinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
Datolite9.AJ.20CaB(SiO4)(OH)
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Laumontite9.GB.10CaAl2Si4O12 · 4H2O
Microcline9.FA.30K(AlSi3O8)
Saponite9.EC.45Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
'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
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Chalcocite2.4.7.1Cu2S
Group 4 - SIMPLE OXIDES
A2X
Cuprite4.1.1.1Cu2O
A2X3
Hematite4.3.1.2Fe2O3
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Malachite16a.3.1.1Cu2(CO3)(OH)2
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 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
Chamosite71.4.1.7(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Clinochlore71.4.1.4Mg5Al(AlSi3O10)(OH)8
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Microcline76.1.1.5K(AlSi3O8)
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Laumontite77.1.1.4CaAl2Si4O12 · 4H2O
Unclassified Minerals, Mixtures, etc.
'Chlorite Group'-
'Pumpellyite'-
Quartz
var: Agate
-SiO2
var: Chalcedony-SiO2
var: Lake Superior Agate-SiO2

List of minerals for each chemical element

HHydrogen
H MalachiteCu2(CO3)(OH)2
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H DatoliteCaB(SiO4)(OH)
H LaumontiteCaAl2Si4O12 · 4H2O
H ClinochloreMg5Al(AlSi3O10)(OH)8
H Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
H SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
BBoron
B DatoliteCaB(SiO4)(OH)
CCarbon
C MalachiteCu2(CO3)(OH)2
C CalciteCaCO3
OOxygen
O MalachiteCu2(CO3)(OH)2
O QuartzSiO2
O CalciteCaCO3
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O DatoliteCaB(SiO4)(OH)
O Quartz (var: Lake Superior Agate)SiO2
O LaumontiteCaAl2Si4O12 · 4H2O
O Quartz (var: Chalcedony)SiO2
O HematiteFe2O3
O MicroclineK(AlSi3O8)
O CupriteCu2O
O ClinochloreMg5Al(AlSi3O10)(OH)8
O Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
O SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
NaSodium
Na SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
MgMagnesium
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
Mg Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Mg SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
AlAluminium
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al LaumontiteCaAl2Si4O12 · 4H2O
Al MicroclineK(AlSi3O8)
Al ClinochloreMg5Al(AlSi3O10)(OH)8
Al Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Al SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
SiSilicon
Si QuartzSiO2
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si DatoliteCaB(SiO4)(OH)
Si Quartz (var: Lake Superior Agate)SiO2
Si LaumontiteCaAl2Si4O12 · 4H2O
Si Quartz (var: Chalcedony)SiO2
Si MicroclineK(AlSi3O8)
Si ClinochloreMg5Al(AlSi3O10)(OH)8
Si Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Si SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
SSulfur
S ChalcociteCu2S
KPotassium
K MicroclineK(AlSi3O8)
CaCalcium
Ca CalciteCaCO3
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca DatoliteCaB(SiO4)(OH)
Ca LaumontiteCaAl2Si4O12 · 4H2O
Ca SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
FeIron
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe HematiteFe2O3
Fe Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Fe SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
CuCopper
Cu ChalcociteCu2S
Cu CopperCu
Cu MalachiteCu2(CO3)(OH)2
Cu CupriteCu2O

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Butler, B.S., and Burbank, W.S. (1929), The Copper Deposits of Michigan. U.S. Geological Survey. Professional Paper 144. 238 pp.
Kaminski-Hamka, T. (2011), Copper Mines of Houghton County, Michigan. Copperlady Press, 120 pp.
Michigan Copper Company, Michigan Copper Sulfide Project, Keweenaw Peninsula, unpublished report.

Mindat Articles

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


Other Regions, Features and Areas containg 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.
 
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2019, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: November 20, 2019 12:01:03 Page generated: November 16, 2019 01:05:52
Go to top of page