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Sapphire from
Missouri River gravel bar, Helena area, Helena Mining District (Spring Hill Mining District), Lewis and Clark County, Montana, USA
| Locality type: | Beach | |
| Classification | ||
|---|---|---|
| Species: | Corundum var: Sapphire | |
| Formula: | Al2O3 | |
| Confirmation | ||
| Validity: | Believed Valid | |
| Data | ||
| Mineral Data: | Click here to view Sapphire data | |
| Locality Data: | Click here to view Missouri River gravel bar, Helena area, Helena Mining District (Spring Hill Mining District), Lewis and Clark County, Montana, USA | |
| Data Identifiers | ||
| Mindat Occurrence Record ID: | 154802 | |
| Long-form Identifier: | 1:3:154802:0 | |
| GUID (UUID V4): | 0 | |
| Nearest other occurrences of Sapphire | ||
| 1.9km (1.2 miles) | ⓘSpokane Bar (American Gem Corp.; Spokane Bar Sapphire Mine), Lewis and Clark County, Montana, USA | |
| 6.9km (4.3 miles) | ⓘEldorado Bar, East Helena, Lewis and Clark County, Montana, USA | |
| 83.7km (52.0 miles) | ⓘDry Cottonwood placer, Dry Cottonwood Creek, Orofino Mining District, Deer Lodge County, Montana, USA | |
| 92.7km (57.6 miles) | ⓘSteward Mine, Butte Mining District (Summit Valley Mining District), Silver Bow County, Montana, USA | |
| References | ||
Missouri River gravel bar, Helena area, Helena Mining District, Lewis and Clark County, Montana, USA