| Classification |
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| Species: | Corundum var: Sapphire |
| Formula: | Al2O3 |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| 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 |
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| Mindat Occurrence Record ID: | 154802 |
| Long-form Identifier: | 1:3:154802:0 |
| GUID (UUID V4): | 134c62db-ecdb-4fb6-9e43-13b37275c8e0 |
| Nearest other occurrences of Sapphire |
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|
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| 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 deposit (Eldorado Strip Mine), 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 |
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Missouri River gravel bar, Helena area, Helena Mining District, Lewis and Clark County, Montana, USA