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North American Mine, Phoenix, Keweenaw Co., Michigan, USAi
Regional Level Types
North American MineMine
Phoenix- not defined -
Keweenaw Co.County
MichiganState
USACountry

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Latitude & Longitude (WGS84):
47° 22' 3'' North , 88° 19' 19'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Ahmeek146 (2017)9.5km
Copper City187 (2017)10.6km
Calumet703 (2017)16.7km
Laurium1,941 (2017)17.1km
Lake Linden989 (2017)20.3km


An underground copper mine consisting of two shafts. The North American Mining Company was organized in 1848 and was originally located along the bluff on a fissure vein of copper. In 1852, the operations were moved to the current location of the South Cliff Mine where it worked the southern extension of the Cliff Fissure. Total copper production from the original mine site was just under 450,000 pounds. This original mine site is not collectable.

Regions containing this locality

North America PlateTectonic Plate
Keweenaw Peninsula, Michigan, USAPeninsula

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


7 valid minerals.

Detailed Mineral List:

Calcite
Formula: CaCO3
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 385-489
'Chlorite Group'
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 385-489
Copper
Formula: Cu
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 385-489; U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 385-489
Fluorapophyllite-(K)
Formula: KCa4(Si8O20)(F,OH) · 8H2O
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
'Hornblende'
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 385-489
Laumontite
Formula: CaAl2Si4O12 · 4H2O
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 385-489
Prehnite
Formula: Ca2Al2Si3O10(OH)2
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 385-489
Quartz
Formula: SiO2
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 385-489

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 9 - Silicates
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fluorapophyllite-(K)9.EA.15KCa4(Si8O20)(F,OH) · 8H2O
Laumontite9.GB.10CaAl2Si4O12 · 4H2O
Prehnite9.DP.20Ca2Al2Si3O10(OH)2
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
'Hornblende'-

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 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 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Laumontite77.1.1.4CaAl2Si4O12 · 4H2O
Unclassified Minerals, Mixtures, etc.
'Chlorite Group'-
'Hornblende'-

List of minerals for each chemical element

HHydrogen
H Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
H PrehniteCa2Al2Si3O10(OH)2
H LaumontiteCaAl2Si4O12 · 4H2O
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
CCarbon
C CalciteCaCO3
OOxygen
O Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
O CalciteCaCO3
O QuartzSiO2
O PrehniteCa2Al2Si3O10(OH)2
O LaumontiteCaAl2Si4O12 · 4H2O
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
FFluorine
F Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
AlAluminium
Al PrehniteCa2Al2Si3O10(OH)2
Al LaumontiteCaAl2Si4O12 · 4H2O
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
SiSilicon
Si Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
Si QuartzSiO2
Si PrehniteCa2Al2Si3O10(OH)2
Si LaumontiteCaAl2Si4O12 · 4H2O
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
KPotassium
K Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
CaCalcium
Ca Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
Ca CalciteCaCO3
Ca PrehniteCa2Al2Si3O10(OH)2
Ca LaumontiteCaAl2Si4O12 · 4H2O
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
FeIron
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
CuCopper
Cu CopperCu

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: 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]

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]

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

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Henwood, W.J. (1871): Observations on Metalliferous Deposits: On the Native Copper of Lake Superior. Transactions of the Royal Geological Society of Cornwall 8(1), 385-489.
Butler, B.S., and Burbank, W.S. (1929): The copper deposits of Michigan. USGS Prof. Paper 144, 238 pp.
Davidson, E.S., Espenshade, G.H., White, W.S., and Wright, J.C. (1955): Bedrock geology of the Mohawk quadrangle, Michigan. USGS Geol. Quad. Map GQ—54, scale 1:24,000.
Kaminski-Hamka, T. (2011): The Copper Mines of Keweenaw County, Michigan. Copperlady Press, 150 pp.
The Copper Country Rock & Mineral Club (2001): Red Gold and Tarnished Silver, 2nd Ed.


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