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Oligoclase from
Steward Mine, Butte, Butte Mining District (Summit Valley Mining District), Silver Bow Co., Montana, USA

Locality type:Mine
Classification
Species:Albite var: Oligoclase
Formula:(Na,Ca)[Al(Si,Al)Si2O8]
Confirmation
Validity:Believed Valid
References
References:Guidebook for the Butte Field Meeting of the Society Of Economic Geologists, 1973
Data
Mineral Data:Click here to view Oligoclase data
Locality Data:Click here to view Steward Mine, Butte, Butte Mining District (Summit Valley Mining District), Silver Bow Co., Montana, USA
Nearest other occurrences of Oligoclase
85.9km (53.4 miles) Dumortierite Pegmatite Locality (MRDS - 10019821), Ruby Range, Madison Co., Montana, USA
 
Mineral and/or Locality  
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