Petherick Mine, Copper Falls, Eagle Harbor Township, Keweenaw County, Michigan, USAi
| Regional Level Types | |
|---|---|
| Petherick Mine | Mine (Overgrown) |
| Copper Falls | Unincorporated Community |
| Eagle Harbor Township | Township |
| Keweenaw County | County |
| Michigan | State |
| USA | Country |
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Latitude & Longitude (WGS84):
47° 25' 30'' North , 88° 12' 1'' West
Latitude & Longitude (decimal):
Type:
Mine (Overgrown) - last checked 2026
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Ahmeek | 146 (2017) | 20.4km |
| Copper City | 187 (2017) | 21.1km |
| Copper Harbor | 108 (2017) | 24.0km |
| Calumet | 703 (2017) | 27.5km |
| Laurium | 1,941 (2017) | 27.7km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Copper Country Rock and Mineral Club | Dollar Bay, Michigan | 41km |
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 Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
10 valid minerals.
Detailed Mineral List:
| ⓘ Analcime Formula: Na(AlSi2O6) · H2O References: |
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Datolite Formula: CaB(SiO4)(OH) |
| ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ Native Copper Formula: Cu |
| ⓘ Native Silver Formula: Ag |
| ⓘ Natrolite Formula: Na2Al2Si3O10 · 2H2O |
| ⓘ Prehnite Formula: Ca2Al2Si3O10(OH)2 |
| ⓘ Pumpellyite-(Mg) Formula: Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH) |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Copper | 1.AA.05 | Cu |
| ⓘ | Native Silver | 1.AA.05 | Ag |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Group 9 - Silicates | |||
| ⓘ | Datolite | 9.AJ.20 | CaB(SiO4)(OH) |
| ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ | Pumpellyite-(Mg) | 9.BG.20 | Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH) |
| ⓘ | Prehnite | 9.DP.20 | Ca2Al2Si3O10(OH)2 |
| ⓘ | Natrolite | 9.GA.05 | Na2Al2Si3O10 · 2H2O |
| ⓘ | Analcime | 9.GB.05 | Na(AlSi2O6) · H2O |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Analcime | Na(AlSi2O6) · H2O |
| H | ⓘ Datolite | CaB(SiO4)(OH) |
| H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| H | ⓘ Natrolite | Na2Al2Si3O10 · 2H2O |
| H | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| H | ⓘ Pumpellyite-(Mg) | Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH) |
| B | Boron | |
| B | ⓘ Datolite | CaB(SiO4)(OH) |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Analcime | Na(AlSi2O6) · H2O |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Datolite | CaB(SiO4)(OH) |
| O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | ⓘ Natrolite | Na2Al2Si3O10 · 2H2O |
| O | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| O | ⓘ Pumpellyite-(Mg) | Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH) |
| O | ⓘ Quartz | SiO2 |
| Na | Sodium | |
| Na | ⓘ Analcime | Na(AlSi2O6) · H2O |
| Na | ⓘ Natrolite | Na2Al2Si3O10 · 2H2O |
| Mg | Magnesium | |
| Mg | ⓘ Pumpellyite-(Mg) | Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH) |
| Al | Aluminium | |
| Al | ⓘ Analcime | Na(AlSi2O6) · H2O |
| Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Al | ⓘ Natrolite | Na2Al2Si3O10 · 2H2O |
| Al | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Al | ⓘ Pumpellyite-(Mg) | Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH) |
| Si | Silicon | |
| Si | ⓘ Analcime | Na(AlSi2O6) · H2O |
| Si | ⓘ Datolite | CaB(SiO4)(OH) |
| Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | ⓘ Natrolite | Na2Al2Si3O10 · 2H2O |
| Si | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Si | ⓘ Pumpellyite-(Mg) | Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH) |
| Si | ⓘ Quartz | SiO2 |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Datolite | CaB(SiO4)(OH) |
| Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Ca | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Ca | ⓘ Pumpellyite-(Mg) | Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH) |
| Fe | Iron | |
| Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Cu | Copper | |
| Cu | ⓘ Native Copper | Cu |
| Ag | Silver | |
| Ag | ⓘ Native Silver | Ag |
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Mid-continent DomainDomain
- Mid-continent RiftNarrow Rift
USA
- Michigan
- Keweenaw PeninsulaPeninsula
- Midcontinent RiftGeologic Province
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Petherick Mine, Copper Falls, Eagle Harbor Township, Keweenaw County, Michigan, USA