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Petherick Mine, Copper Falls, Keweenaw Co., Michigan, USAi
Regional Level Types
Petherick MineMine
Copper Falls- not defined -
Keweenaw Co.County
MichiganState
USACountry

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Key
Latitude & Longitude (WGS84):
47° 25' 25'' North , 88° 12' 0'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Ahmeek146 (2017)20.3km
Copper City187 (2017)21.0km
Copper Harbor108 (2017)24.0km
Calumet703 (2017)27.4km
Laurium1,941 (2017)27.6km


The Petherick Mining Company was organized in 1861 by the Copper Falls Mining Company. It consisted of 10 shafts and at least 2 adits. The mine ran steady from 1861 to 1868, and again from 1872 to 1877. In 1880, the mine was reorganized as the Ashbed Mining Company and work continued until 1884, at which time the mine shutdown. Exploratory work was conducted in 1898, 1900, and 1905, but was never re-opened. Fine copper, analcime, natrolite, and datolite crystals can be found here.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


10 valid minerals.

Detailed Mineral List:

Analcime
Formula: Na(AlSi2O6) · H2O
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson; Rocks & Minerals 84:298-323.
Calcite
Formula: CaCO3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Copper
Formula: Cu
Reference: Rocks & Min.: 58:111.
Datolite
Formula: CaB(SiO4)(OH)
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Natrolite
Formula: Na2Al2Si3O10 · 2H2O
Reference: Rocks & Minerals 84:298-323.
Prehnite
Formula: Ca2Al2Si3O10(OH)2
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson
Pumpellyite-(Mg)
Formula: Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Quartz
Formula: SiO2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Silver
Formula: Ag
Reference: Mineralogy of Michigan (2004) Heinrich & Robinson

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Silver1.AA.05Ag
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 9 - Silicates
Analcime9.GB.05Na(AlSi2O6) · H2O
Datolite9.AJ.20CaB(SiO4)(OH)
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Natrolite9.GA.05Na2Al2Si3O10 · 2H2O
Prehnite9.DP.20Ca2Al2Si3O10(OH)2
Pumpellyite-(Mg)9.BG.20Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O

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 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
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)
Pumpellyite-(Mg)58.2.2.7Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
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
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
Analcime77.1.1.1Na(AlSi2O6) · H2O
Natrolite77.1.5.1Na2Al2Si3O10 · 2H2O

List of minerals for each chemical element

HHydrogen
H Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H DatoliteCaB(SiO4)(OH)
H AnalcimeNa(AlSi2O6) · H2O
H PrehniteCa2Al2Si3O10(OH)2
H NatroliteNa2Al2Si3O10 · 2H2O
BBoron
B DatoliteCaB(SiO4)(OH)
CCarbon
C CalciteCaCO3
OOxygen
O Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
O CalciteCaCO3
O QuartzSiO2
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O DatoliteCaB(SiO4)(OH)
O AnalcimeNa(AlSi2O6) · H2O
O PrehniteCa2Al2Si3O10(OH)2
O NatroliteNa2Al2Si3O10 · 2H2O
NaSodium
Na AnalcimeNa(AlSi2O6) · H2O
Na NatroliteNa2Al2Si3O10 · 2H2O
MgMagnesium
Mg Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
AlAluminium
Al Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al AnalcimeNa(AlSi2O6) · H2O
Al PrehniteCa2Al2Si3O10(OH)2
Al NatroliteNa2Al2Si3O10 · 2H2O
SiSilicon
Si Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Si QuartzSiO2
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si DatoliteCaB(SiO4)(OH)
Si AnalcimeNa(AlSi2O6) · H2O
Si PrehniteCa2Al2Si3O10(OH)2
Si NatroliteNa2Al2Si3O10 · 2H2O
CaCalcium
Ca Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Ca CalciteCaCO3
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca DatoliteCaB(SiO4)(OH)
Ca PrehniteCa2Al2Si3O10(OH)2
FeIron
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
CuCopper
Cu CopperCu
AgSilver
Ag SilverAg

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.
The Copper Country Rock & Mineral Club, 2001, Red Gold and Tarnished Silver, 2nd Ed., 44 pp.
Clarke, D.H., 1974, Copper Mines of Keweenaw; Copper Falls Mining Company, No. 6, 36 pp.

Other Regions, Features and Areas containg this locality

North America PlateTectonic Plate
USA

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