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Sillimanite from
Gulch A Pegmatites Occurrence, Varney Mining District, Madison Co., Montana, USA

Locality type:Occurrence
Classification
Species:Sillimanite
Formula:Al2(SiO4)O
Confirmation
Validity:Believed Valid
References
References:U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Data
Mineral Data:Click here to view Sillimanite data
Locality Data:Click here to view Gulch A Pegmatites Occurrence, Varney Mining District, Madison Co., Montana, USA
Nearest other occurrences of Sillimanite
1.3km (0.8 miles) Rim Rock Deposit, Varney Mining District, Madison Co., Montana, USA
22.6km (14.0 miles) Unnamed Copper Prospect (MRDS - 10013904), Greenhorn Range, Madison Co., Montana, USA
25.3km (15.7 miles) Skunk Creek outcrops, Madison Co., Montana, USA
41.6km (25.9 miles) Horse Creek Talc Prospect, Sheridan Mining District (Mill Creek Mining District; Wisconsin Mining District), Madison Co., Montana, USA
43.0km (26.7 miles) Beartrap Corundum Deposit (Bear Trap deposit), Madison Co., Montana, USA
46.3km (28.7 miles) Stone Creek Deposits, Ruby Range, Madison Co., Montana, USA
47.6km (29.5 miles) Unnamed Kyanite Occurrence (MRDS - 10019827), Ruby Range, Madison Co., Montana, USA
48.7km (30.2 miles) Unnamed Kyanite Occurrence (MRDS - 10019829), Ruby Range, Madison Co., Montana, USA
52.9km (32.9 miles) Unnamed Kyanite Occurrence (MRDS - 10019186), Ruby Range, Madison Co., Montana, USA
53.0km (32.9 miles) Unnamed Kyanite Occurrence (MRDS - 10019830), Ruby Range, Madison Co., Montana, USA
 
Mineral and/or Locality  
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