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Spokane Bar (American Gem Corp.; Spokane Bar Sapphire Mine), Lewis and Clark County, Montana, USAi
| Regional Level Types | |
|---|---|
| Spokane Bar (American Gem Corp.; Spokane Bar Sapphire Mine) | - not defined - |
| Lewis and Clark County | County |
| Montana | State |
| USA | Country |
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Latitude & Longitude (WGS84):
46° 40' 2'' North , 111° 48' 55'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Helena Valley Southeast | 8,227 (2011) | 10.0km |
| Helena Valley Northeast | 2,995 (2011) | 11.0km |
| East Helena | 2,057 (2017) | 11.5km |
| Montana City | 2,715 (2011) | 17.0km |
| South Hills | 517 (2017) | 18.6km |
Sec. 35, T 11 N, R 2 W.
Commodities (Major) - Gold; (Trace) - Gemstone, Gemstone - Sapphire
Development Status: Past Producer
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
4 valid minerals.
Detailed Mineral List:
| ⓘ Almandine Formula: Fe2+3Al2(SiO4)3 |
| ⓘ Corundum Formula: Al2O3 References: |
| ⓘ Corundum var. Sapphire Formula: Al2O3 References: |
| ⓘ Native Gold Formula: Au |
| ⓘ Topaz Formula: Al2(SiO4)(F,OH)2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Corundum | 4.CB.05 | Al2O3 |
| ⓘ | var. Sapphire | 4.CB.05 | Al2O3 |
| Group 9 - Silicates | |||
| ⓘ | Almandine | 9.AD.25 | Fe2+3Al2(SiO4)3 |
| ⓘ | Topaz | 9.AF.35 | Al2(SiO4)(F,OH)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| O | Oxygen | |
| O | ⓘ Almandine | Fe32+Al2(SiO4)3 |
| O | ⓘ Corundum | Al2O3 |
| O | ⓘ Corundum var. Sapphire | Al2O3 |
| O | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| F | Fluorine | |
| F | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| Al | Aluminium | |
| Al | ⓘ Almandine | Fe32+Al2(SiO4)3 |
| Al | ⓘ Corundum | Al2O3 |
| Al | ⓘ Corundum var. Sapphire | Al2O3 |
| Al | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| Si | Silicon | |
| Si | ⓘ Almandine | Fe32+Al2(SiO4)3 |
| Si | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| Fe | Iron | |
| Fe | ⓘ Almandine | Fe32+Al2(SiO4)3 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS MRDS: | 10173041 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Belt BasinBasin
- Great Falls DomainDomain
- Northern Rocky MountainsWide Rift
USA
- Montana
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