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Mount Bohemia, Lac La Belle, Keweenaw Co., Michigan, USAi
Regional Level Types
Mount BohemiaMountain
Lac La Belle- not defined -
Keweenaw Co.County
MichiganState
USACountry

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Mendota Mine rockpile

Mendota Mine, Mount Bohemia, Lac La Belle, Keweenaw Co., Michigan, USA
Mendota Mine rockpile

Mendota Mine, Mount Bohemia, Lac La Belle, Keweenaw Co., Michigan, USA
Malachite

Mendota Mine, Mount Bohemia, Lac La Belle, Keweenaw Co., Michigan, USA
Mendota Mine rockpile

Mendota Mine, Mount Bohemia, Lac La Belle, Keweenaw Co., Michigan, USA
Mendota Mine rockpile

Mendota Mine, Mount Bohemia, Lac La Belle, Keweenaw Co., Michigan, USA
Malachite

Mendota Mine, Mount Bohemia, Lac La Belle, Keweenaw Co., Michigan, USA
Mendota Mine rockpile

Mendota Mine, Mount Bohemia, Lac La Belle, Keweenaw Co., Michigan, USA
Mendota Mine rockpile

Mendota Mine, Mount Bohemia, Lac La Belle, Keweenaw Co., Michigan, USA
Latitude & Longitude (WGS84):
47° 23' 30'' North , 88° 0' 47'' West
Latitude & Longitude (decimal):
47.39167,-88.01306
GeoHash:
G#: f03mt5qu7
Locality type:
Mountain
Köppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Copper Harbor108 (2017)12.7km
Copper City187 (2017)30.6km
Ahmeek146 (2017)30.7km
Laurium1,941 (2017)36.7km
Calumet703 (2017)36.9km


A diorite and granophyre intrusive complex.

Regions containing this locality

North America PlateTectonic Plate
Keweenaw Peninsula, Michigan, USAPeninsula

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

25 valid minerals.

Detailed Mineral List:

ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ Albite var: Oligoclase
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
ⓘ Anorthite
Formula: Ca(Al2Si2O8)
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
ⓘ Anorthite var: Labradorite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
ⓘ Baryte
Formula: BaSO4
Bornite, etc.

Mendota Mine, Mount Bohemia, Lac La Belle, Keweenaw Co., Michigan, USA
ⓘ Bornite
Formula: Cu5FeS4
Calcite, etc.

Mendota Mine, Mount Bohemia, Lac La Belle, Keweenaw Co., Michigan, USA
ⓘ Calcite
Formula: CaCO3
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
Chalcocite

Mendota Mine, Mount Bohemia, Lac La Belle, Keweenaw Co., Michigan, USA
ⓘ Chalcocite
Formula: Cu2S
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ 'Chlorite Group'
Reference: Institute on Lake Superior Geology Proceedings, 40th Annual Meeting, Houghton, MI, v. 40, part 4,
Chrysocolla

Mendota Mine, Mount Bohemia, Lac La Belle, Keweenaw Co., Michigan, USA
ⓘ Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Reference: Rocks & Minerals 84:298-323
ⓘ Copper
Formula: Cu
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
ⓘ Covellite
Formula: CuS
Reference: Bornhorst & Rose (1994) Self-guided geological field trip to the Keweenaw Peninsula, Michigan. Institute Lake Superior Geology proceedings vol 40 part 2
ⓘ Cuprite
Formula: Cu2O
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
ⓘ Digenite
Formula: Cu9S5
Reference: Bornhorst & Rose (1994) Self-guided geological field trip to the Keweenaw Peninsula, Michigan. Institute Lake Superior Geology proceedings vol 40 part 2
ⓘ Djurleite
Formula: Cu31S16
Reference: Bornhorst & Rose (1994) Self-guided geological field trip to the Keweenaw Peninsula, Michigan. Institute Lake Superior Geology proceedings vol 40 part 2
ⓘ Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Institute on Lake Superior Geology Proceedings, 40th Annual Meeting, Houghton, MI, v. 40, part 4,
ⓘ 'Fayalite-Forsterite Series'
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
ⓘ Galena
Formula: PbS
Reference: Bornhorst & Rose (1994) Self-guided geological field trip to the Keweenaw Peninsula, Michigan. Institute Lake Superior Geology proceedings vol 40 part 2
ⓘ Hematite
Formula: Fe2O3
Reference: Bornhorst & Rose (1994) Self-guided geological field trip to the Keweenaw Peninsula, Michigan. Institute Lake Superior Geology proceedings vol 40 part 2; Institute on Lake Superior Geology Proceedings, 40th Annual Meeting, Houghton, MI, v. 40, part 4,
ⓘ 'K Feldspar'
Reference: Institute on Lake Superior Geology Proceedings, 40th Annual Meeting, Houghton, MI, v. 40, part 4,
ⓘ Laumontite
Formula: CaAl2Si4O12 · 4H2O
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
Malachite

Mendota Mine, Mount Bohemia, Lac La Belle, Keweenaw Co., Michigan, USA
ⓘ Malachite
Formula: Cu2(CO3)(OH)2
ⓘ 'Pumpellyite'
Reference: Institute on Lake Superior Geology Proceedings, 40th Annual Meeting, Houghton, MI, v. 40, part 4,
ⓘ Pyrite
Formula: FeS2
Reference: Bornhorst & Rose (1994) Self-guided geological field trip to the Keweenaw Peninsula, Michigan. Institute Lake Superior Geology proceedings vol 40 part 2; Institute on Lake Superior Geology Proceedings, 40th Annual Meeting, Houghton, MI, v. 40, part 4,
ⓘ Quartz
Formula: SiO2
Reference: Institute on Lake Superior Geology Proceedings, 40th Annual Meeting, Houghton, MI, v. 40, part 4,
ⓘ Silver
Formula: Ag
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
ⓘ Sphalerite
Formula: ZnS
Reference: Bornhorst & Rose (1994) Self-guided geological field trip to the Keweenaw Peninsula, Michigan. Institute Lake Superior Geology proceedings vol 40 part 2
ⓘ Titanite
Formula: CaTi(SiO4)O
Reference: Institute on Lake Superior Geology Proceedings, 40th Annual Meeting, Houghton, MI, v. 40, part 4,

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
ⓘCovellite2.CA.05aCuS
ⓘDigenite2.BA.10Cu9S5
ⓘDjurleite2.BA.05Cu31S16
ⓘGalena2.CD.10PbS
ⓘPyrite2.EB.05aFeS2
ⓘSphalerite2.CB.05aZnS
Group 4 - Oxides and Hydroxides
ⓘCuprite4.AA.10Cu2O
ⓘHematite4.CB.05Fe2O3
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘMalachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘBaryte7.AD.35BaSO4
Group 9 - Silicates
ⓘAlbite9.FA.35Na(AlSi3O8)
ⓘvar: Oligoclase9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
ⓘAnorthite9.FA.35Ca(Al2Si2O8)
ⓘvar: Labradorite9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘChrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
ⓘEpidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
ⓘLaumontite9.GB.10CaAl2Si4O12 · 4H2O
ⓘTitanite9.AG.15CaTi(SiO4)O
Unclassified Minerals, Rocks, etc.
ⓘ'Chlorite Group'-
ⓘ'Fayalite-Forsterite Series'-
ⓘ'K Feldspar'-
ⓘ'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 = 2:1
ⓘChalcocite2.4.7.1Cu2S
ⓘDigenite2.4.7.3Cu9S5
ⓘDjurleite2.4.7.2Cu31S16
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
ⓘSphalerite2.8.2.1ZnS
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 7 - MULTIPLE OXIDES
AB2X4
ⓘMagnetite7.2.2.3Fe2+Fe3+2O4
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 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
ⓘBaryte28.3.1.1BaSO4
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
ⓘTitanite52.4.3.1CaTi(SiO4)O
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=2
ⓘAugite65.1.3a.3(CaxMgyFez)(Mgy1Fez1)Si2O6
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
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
ⓘAlbite76.1.3.1Na(AlSi3O8)
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
ⓘLaumontite77.1.1.4CaAl2Si4O12 · 4H2O
Unclassified Minerals, Mixtures, etc.
ⓘAlbite
var: Oligoclase		-(Na,Ca)[Al(Si,Al)Si2O8]
ⓘAnorthite-Ca(Al2Si2O8)
ⓘvar: Labradorite-(Ca,Na)[Al(Al,Si)Si2O8]
ⓘ'Chlorite Group'-
ⓘ'Fayalite-Forsterite Series'-
ⓘ'K Feldspar'-
ⓘ'Pumpellyite'-

List of minerals for each chemical element

HHydrogen
Hⓘ MalachiteCu2(CO3)(OH)2
Hⓘ LaumontiteCaAl2Si4O12 · 4H2O
Hⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Hⓘ Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
CCarbon
Cⓘ MalachiteCu2(CO3)(OH)2
Cⓘ CalciteCaCO3
OOxygen
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ BaryteBaSO4
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ HematiteFe2O3
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ Anorthite (var: Labradorite)(Ca,Na)[Al(Al,Si)Si2O8]
Oⓘ Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
Oⓘ CupriteCu2O
Oⓘ LaumontiteCaAl2Si4O12 · 4H2O
Oⓘ CalciteCaCO3
Oⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Oⓘ Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Oⓘ QuartzSiO2
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ TitaniteCaTi(SiO4)O
Oⓘ AnorthiteCa(Al2Si2O8)
NaSodium
Naⓘ Anorthite (var: Labradorite)(Ca,Na)[Al(Al,Si)Si2O8]
Naⓘ Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
Naⓘ AlbiteNa(AlSi3O8)
MgMagnesium
Mgⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
AlAluminium
Alⓘ Anorthite (var: Labradorite)(Ca,Na)[Al(Al,Si)Si2O8]
Alⓘ Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
Alⓘ LaumontiteCaAl2Si4O12 · 4H2O
Alⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Alⓘ Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ AnorthiteCa(Al2Si2O8)
SiSilicon
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ Anorthite (var: Labradorite)(Ca,Na)[Al(Al,Si)Si2O8]
Siⓘ Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
Siⓘ LaumontiteCaAl2Si4O12 · 4H2O
Siⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Siⓘ Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Siⓘ QuartzSiO2
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ TitaniteCaTi(SiO4)O
Siⓘ AnorthiteCa(Al2Si2O8)
SSulfur
Sⓘ BaryteBaSO4
Sⓘ BorniteCu5FeS4
Sⓘ ChalcociteCu2S
Sⓘ ChalcopyriteCuFeS2
Sⓘ PyriteFeS2
Sⓘ GalenaPbS
Sⓘ SphaleriteZnS
Sⓘ DigeniteCu9S5
Sⓘ DjurleiteCu31S16
Sⓘ CovelliteCuS
CaCalcium
Caⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ Anorthite (var: Labradorite)(Ca,Na)[Al(Al,Si)Si2O8]
Caⓘ Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
Caⓘ LaumontiteCaAl2Si4O12 · 4H2O
Caⓘ CalciteCaCO3
Caⓘ Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Caⓘ TitaniteCaTi(SiO4)O
Caⓘ AnorthiteCa(Al2Si2O8)
TiTitanium
Tiⓘ TitaniteCaTi(SiO4)O
FeIron
Feⓘ BorniteCu5FeS4
Feⓘ ChalcopyriteCuFeS2
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ HematiteFe2O3
Feⓘ PyriteFeS2
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feⓘ Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
CuCopper
Cuⓘ MalachiteCu2(CO3)(OH)2
Cuⓘ BorniteCu5FeS4
Cuⓘ ChalcociteCu2S
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ DigeniteCu9S5
Cuⓘ DjurleiteCu31S16
Cuⓘ CovelliteCuS
Cuⓘ CopperCu
Cuⓘ CupriteCu2O
Cuⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
ZnZinc
Znⓘ SphaleriteZnS
AgSilver
Agⓘ SilverAg
BaBarium
Baⓘ BaryteBaSO4
PbLead
Pbⓘ GalenaPbS

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Ma



ID: 3185648

Age: Anthropocene ( Ma)

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Stenian
1000 - 1200 Ma



ID: 2928161
Portage Lake Volcanics

Age: Stenian (1000 - 1200 Ma)

Stratigraphic Name: Portage Lake Volcanics

Description: Lava flows, mostly basalt, andesite and felsite flows and subordinate interflow sedimentary rocks.

Comments: This unit is the same as unit Yp on paper map of Sims (1992). Description is taken from that unit description. Original map source: Cannon, W.F., Kress, T.H., Sutphin, D.M., Morey, G.B., Meints, Joyce, and Barber-Delach, Robert, 1997, Digital Geologic Map and mineral deposits of the Lake Superior Region, Minnesota, Wisconsin, Michigan: USGS Open-File Report 97-455 (version 3, Nov. 19

Lithology: Major:{basalt}, Minor:{basaltic andesite}, Incidental:{rhyolite, sandstone mudstone}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Bornhorst, T.J., and Rose, W.I. (1994), Self-guided Geological Field Trip to the Keweenaw Peninsula, Michigan: 40th Annual Institute on Lake Superior Geology, Houghton, Michigan: volume 40, part 2, 185 pp.

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