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Allouez, Keweenaw Co., Michigan, USA

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Latitude & Longitude (WGS84): 47° 17' 13'' North , 88° 24' 34'' West
Latitude & Longitude (decimal): 47.28706,-88.40957
GeoHash:G#: f03jh0q55
Köppen climate type:Dfb : Warm-summer humid continental climate


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Regions containing this locality

Keweenaw Peninsula, Michigan, USA

Peninsula - 232 mineral species & varietal names listed

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

17 valid minerals.

Detailed Mineral List:

Andradite
Formula: Ca3Fe3+2(SiO4)3
Atacamite
Formula: Cu2(OH)3Cl
Calcite
Formula: CaCO3
Chalcocite
Formula: Cu2S
'Chlorite Group'
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Copper
Formula: Cu
'commodity:Copper'
Formula: Cu
Cuprite
Formula: Cu2O
Datolite
Formula: CaB(SiO4)(OH)
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fluorapophyllite-(K)
Formula: KCa4(Si8O20)(F,OH) · 8H2O
'K Feldspar'
'K Feldspar var: Adularia'
Formula: KAlSi3O8
Malachite
Formula: Cu2(CO3)(OH)2
Microcline
Formula: K(AlSi3O8)
Natrolite
Formula: Na2Al2Si3O10 · 2H2O
Prehnite
Formula: Ca2Al2Si3O10(OH)2
Quartz
Formula: SiO2
Silver
Formula: Ag
Tenorite
Formula: CuO

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Copper'1.AA.05Cu
'Silver'1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
'Chalcocite'2.BA.05Cu2S
Group 3 - Halides
'Atacamite'3.DA.10aCu2(OH)3Cl
Group 4 - Oxides and Hydroxides
'Cuprite'4.AA.10Cu2O
'Quartz'4.DA.05SiO2
'Tenorite'4.AB.10CuO
Group 5 - Nitrates and Carbonates
'Calcite'5.AB.05CaCO3
'Malachite'5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
'Andradite'9.AD.25Ca3Fe3+2(SiO4)3
'Chrysocolla'9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
'Datolite'9.AJ.20CaB(SiO4)(OH)
'Epidote'9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
'Fluorapophyllite-(K)'9.EA.15KCa4(Si8O20)(F,OH) · 8H2O
'Microcline'9.FA.30K(AlSi3O8)
'Natrolite'9.GA.05Na2Al2Si3O10 · 2H2O
'Prehnite'9.DP.20Ca2Al2Si3O10(OH)2
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
'K Feldspar'-
'var: Adularia'-KAlSi3O8

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
Group 4 - SIMPLE OXIDES
A2X
Cuprite4.1.1.1Cu2O
AX
Tenorite4.2.3.1CuO
Group 10 - OXYHALIDES AND HYDROXYHALIDES
A2(O,OH)3Xq
Atacamite10.1.1.1Cu2(OH)3Cl
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 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Andradite51.4.3b.1Ca3Fe3+2(SiO4)3
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 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 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
Microcline76.1.1.5K(AlSi3O8)
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Natrolite77.1.5.1Na2Al2Si3O10 · 2H2O
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
'K Feldspar'-
'var: Adularia'-KAlSi3O8

List of minerals for each chemical element

HHydrogen
H AtacamiteCu2(OH)3Cl
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
H DatoliteCaB(SiO4)(OH)
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
H MalachiteCu2(CO3)(OH)2
H NatroliteNa2Al2Si3O10 · 2H2O
H PrehniteCa2Al2Si3O10(OH)2
BBoron
B DatoliteCaB(SiO4)(OH)
CCarbon
C CalciteCaCO3
C MalachiteCu2(CO3)(OH)2
OOxygen
O K Feldspar (var: Adularia)KAlSi3O8
O AndraditeCa3Fe23+(SiO4)3
O AtacamiteCu2(OH)3Cl
O CalciteCaCO3
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
O CupriteCu2O
O DatoliteCaB(SiO4)(OH)
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
O MalachiteCu2(CO3)(OH)2
O MicroclineK(AlSi3O8)
O NatroliteNa2Al2Si3O10 · 2H2O
O PrehniteCa2Al2Si3O10(OH)2
O QuartzSiO2
O TenoriteCuO
FFluorine
F Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
NaSodium
Na NatroliteNa2Al2Si3O10 · 2H2O
AlAluminium
Al K Feldspar (var: Adularia)KAlSi3O8
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al MicroclineK(AlSi3O8)
Al NatroliteNa2Al2Si3O10 · 2H2O
Al PrehniteCa2Al2Si3O10(OH)2
SiSilicon
Si K Feldspar (var: Adularia)KAlSi3O8
Si AndraditeCa3Fe23+(SiO4)3
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Si DatoliteCaB(SiO4)(OH)
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
Si MicroclineK(AlSi3O8)
Si NatroliteNa2Al2Si3O10 · 2H2O
Si PrehniteCa2Al2Si3O10(OH)2
Si QuartzSiO2
SSulfur
S ChalcociteCu2S
ClChlorine
Cl AtacamiteCu2(OH)3Cl
KPotassium
K K Feldspar (var: Adularia)KAlSi3O8
K Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
K MicroclineK(AlSi3O8)
CaCalcium
Ca AndraditeCa3Fe23+(SiO4)3
Ca CalciteCaCO3
Ca DatoliteCaB(SiO4)(OH)
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
Ca PrehniteCa2Al2Si3O10(OH)2
FeIron
Fe AndraditeCa3Fe23+(SiO4)3
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
CuCopper
Cu AtacamiteCu2(OH)3Cl
Cu ChalcociteCu2S
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Cu CopperCu
Cu CupriteCu2O
Cu MalachiteCu2(CO3)(OH)2
Cu TenoriteCuO
AgSilver
Ag SilverAg

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

Stenian
1000 - 1200 Ma



ID: 3184728
Mesoproterozoic volcanic rocks

Age: Stenian (1000 - 1200 Ma)

Comments: Mid-Continent Rift

Lithology: Bimodal volcanic rocks

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.

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

Localities in this Region
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