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Sapphire from
Steward Mine, Butte Mining District (Summit Valley Mining District), Silver Bow County, Montana, USA


Locality type:Mine
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 Steward Mine, Butte Mining District (Summit Valley Mining District), Silver Bow County, Montana, USA
Data Identifiers
Mindat Occurrence Record ID:649996
Long-form Identifier:1:3:649996:9
GUID (UUID V4):0
Nearest other occurrences of Sapphire
22.5km (14.0 miles) ⓘDry Cottonwood placer, Dry Cottonwood Creek, Orofino Mining District, Deer Lodge County, Montana, USA
79.5km (49.4 miles) ⓘNorris Deposit, Madison 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 (59.4 miles) ⓘEldorado Bar, East Helena, Lewis and Clark County, Montana, USA
References
Berg, R.B. (2007) Sapphires in the Butte-Deer Lodge area, Montana. Bulletin 134. Montana Bureau of Mines and Geology
 
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