| Locality type: | Mine |
| Classification |
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| Species: | Corundum |
| Formula: | Al2O3 |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Corundum data |
| Locality Data: | Click here to view Steward Mine, Butte Mining District (Summit Valley Mining District), Silver Bow County, Montana, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 649995 |
| Long-form Identifier: | 1:3:649995:2 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Corundum |
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| 22.5km (14.0 miles) | ⓘDry Cottonwood placer, Dry Cottonwood Creek, Orofino Mining District, Deer Lodge County, Montana, USA |
| 56.2km (34.9 miles) | ⓘGilliam prospect, Madison County, Montana, USA |
| 79.5km (49.4 miles) | ⓘNorris Deposit, Madison County, Montana, USA |
| 86.2km (53.6 miles) | ⓘQuartz Creek Deposit, Sapphire Mountains Area, Granite County, Montana, USA |
| 87.1km (54.2 miles) | ⓘGem Mountain Sapphire Mine (American Sapphire Gem Mine; Chaussee Sapphire Mine), Rock Creek Mining District, Granite County, Montana, USA |
| 87.3km (54.3 miles) | ⓘRock Creek Sapphire (American Sapphire Gem Mine; Gem Mountain Mine; Anaconda-Sapphire Gulches; Chaussee Sapphire Corp. Mine; American Gem Corp.), Rock Creek Mining District, Granite County, Montana, USA |
| 90.9km (56.5 miles) | ⓘSpokane Bar (American Gem Corp.; Spokane Bar Sapphire Mine), Lewis and Clark County, Montana, USA |
| 92.7km (57.6 miles) | ⓘMissouri River gravel bar, Helena area, Helena Mining District (Spring Hill Mining District), Lewis and Clark County, Montana, USA |
| 95.5km (59.3 miles) | ⓘBeartrap corundum deposit, Madison County, Montana, USA |
| 95.5km (59.4 miles) | ⓘEldorado Bar, East Helena, Lewis and Clark County, Montana, USA |
| References |
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