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Chippewa Mine, Douglas County, Wisconsin, USAi
| Regional Level Types | |
|---|---|
| Chippewa Mine | Mine (Abandoned) |
| Douglas County | County |
| Wisconsin | State |
| USA | Country |
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Latitude & Longitude (WGS84):
46° 35' 22'' North , 91° 50' 4'' West
Latitude & Longitude (decimal):
Type:
Mine (Abandoned) - last checked 2018
Deposit first discovered:
1897
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Poplar | 600 (2017) | 2.8km |
| Lake Nebagamon | 1,058 (2017) | 13.2km |
| Brule | 254 (2017) | 20.1km |
| Superior Village | 558 (2017) | 21.9km |
| Superior | 26,579 (2017) | 25.2km |
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 |
|---|---|---|
| Carlton County Gem and Mineral Club | Cloquet, Minnesota | 50km |
Several shafts and tunnels were sunk in metabasalts near Middle River (SW SW Sec 3 T47N R12W). The earliest work was done in 1897-1899, with follow up work in 1901. The U.S. Bureau of Mines did follow-up work in 1953 on the basis of earlier reports of nickel mineralization with the copper. The early reports also noted silver and gold values, which were not substantiated by the Bureau of Mines work. The Bureau of Mines work indicate that copper values were sub-economic and no nickel analysis topped 0.0041%. The rocks dip steeply to the south. The main copper mineral observed was native copper. The mineral was seen as not "persistent" and "spotty" in veins, vugs and amygdules, associated with quartz, calcite, prehnite and epidote.
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
6 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Calcite Formula: CaCO3 |
| ⓘ 'Chlorite Group' |
| ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ Laumontite Formula: CaAl2Si4O12 · 4H2O |
| ⓘ Native Copper Formula: Cu |
| ⓘ Prehnite Formula: Ca2Al2Si3O10(OH)2 |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Copper | 1.AA.05 | Cu |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Group 9 - Silicates | |||
| ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ | Prehnite | 9.DP.20 | Ca2Al2Si3O10(OH)2 |
| ⓘ | Laumontite | 9.GB.10 | CaAl2Si4O12 · 4H2O |
| Unclassified | |||
| ⓘ | 'Chlorite Group' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| H | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| H | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| O | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| O | ⓘ Quartz | SiO2 |
| Al | Aluminium | |
| Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Al | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| Al | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Si | Silicon | |
| Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| Si | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Si | ⓘ Quartz | SiO2 |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Ca | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| Ca | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Fe | Iron | |
| Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Cu | Copper | |
| Cu | ⓘ Native Copper | Cu |
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Mid-continent DomainDomain
- Mid-continent RiftNarrow Rift
USA
- Midcontinent RiftGeologic Province
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