Flintsteel Mine (Nassau Mine; Old Flintsteel Mine; Superior-Nassau Superior Mine), Mass City, Ontonagon County, Michigan, USAi
| Regional Level Types | |
|---|---|
| Flintsteel Mine (Nassau Mine; Old Flintsteel Mine; Superior-Nassau Superior Mine) | Mine |
| Mass City | Unincorporated Community |
| Ontonagon County | County |
| Michigan | State |
| USA | Country |
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Latitude & Longitude (WGS84):
46° 44' 30'' North , 89° 8' 42'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Ontonagon | 1,324 (2017) | 19.3km |
| White Pine | 474 (2017) | 33.5km |
| Watersmeet | 428 (2017) | 52.7km |
Mindat Locality ID:
33621
Long-form identifier:
mindat:1:2:33621:8
GUID (UUID V4):
83509aa6-3431-4960-aad9-7db0db802293
An underground copper mine consisting of one shaft (Nassau) and a series of pits (FlintSteel Pits). The company organized in 1853 as the Flint Steel River Mining Company. Work was suspended in 1858 and was dormant until 1863 when the company was reorganized as the Flintsteel Copper Company. The company merged with Caledonia in 1871. The Flintsteel produced approx. 870,000 pounds of refined copper. The mine today is excellent for copper, datolite, and good for silver.
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.
Detailed Mineral List:
| β Calcite Formula: CaCO3 |
| β 'Chlorite Group' |
| β Copper Formula: Cu |
| β Datolite Formula: CaB(SiO4)(OH) |
| β Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| β 'K Feldspar' |
| β 'K Feldspar var. Adularia' Formula: KAlSi3O8 |
| β Pumpellyite-(Mg) Formula: Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O |
| β Quartz Formula: SiO2 |
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| β | Copper | 1.AA.05 | Cu |
| Group 4 - Oxides and Hydroxides | |||
| β | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| β | Calcite | 5.AB.05 | CaCO3 |
| Group 9 - Silicates | |||
| β | Datolite | 9.AJ.20 | CaB(SiO4)(OH) |
| β | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| β | Pumpellyite-(Mg) | 9.BG.20 | Ca2MgAl2(Si2O7)(SiO4)(OH)2 Β· H2O |
| Unclassified | |||
| β | 'K Feldspar var. Adularia' | - | KAlSi3O8 |
| β | 'Chlorite Group' | - | |
| β | 'K Feldspar' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Datolite | CaB(SiO4)(OH) |
| H | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| H | β Pumpellyite-(Mg) | Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O |
| B | Boron | |
| B | β Datolite | CaB(SiO4)(OH) |
| C | Carbon | |
| C | β Calcite | CaCO3 |
| O | Oxygen | |
| O | β K Feldspar var. Adularia | KAlSi3O8 |
| O | β Calcite | CaCO3 |
| O | β Datolite | CaB(SiO4)(OH) |
| O | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | β Pumpellyite-(Mg) | Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O |
| O | β Quartz | SiO2 |
| Mg | Magnesium | |
| Mg | β Pumpellyite-(Mg) | Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O |
| Al | Aluminium | |
| Al | β K Feldspar var. Adularia | KAlSi3O8 |
| Al | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Al | β Pumpellyite-(Mg) | Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O |
| Si | Silicon | |
| Si | β K Feldspar var. Adularia | KAlSi3O8 |
| Si | β Datolite | CaB(SiO4)(OH) |
| Si | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | β Pumpellyite-(Mg) | Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O |
| Si | β Quartz | SiO2 |
| K | Potassium | |
| K | β K Feldspar var. Adularia | KAlSi3O8 |
| Ca | Calcium | |
| Ca | β Calcite | CaCO3 |
| Ca | β Datolite | CaB(SiO4)(OH) |
| Ca | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Ca | β Pumpellyite-(Mg) | Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O |
| Fe | Iron | |
| Fe | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Cu | Copper | |
| Cu | β Copper | Cu |
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Mid-continent DomainDomain
USA
- Michigan
- Keweenaw PeninsulaPeninsula
- Midcontinent RiftGeologic Province
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References
