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Sillimanite from
Red Spar Mine, Unorganized mining district [1], Custer County, South Dakota, USA


Locality type:Mine
Classification
Species:Sillimanite
Formula:Al2(SiO4)O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Sillimanite data
Locality Data:Click here to view Red Spar Mine, Unorganized mining district [1], Custer County, South Dakota, USA
Data Identifiers
Mindat Occurrence Record ID:765644
Long-form Identifier:1:3:765644:6
GUID (UUID V4):0
Nearest other occurrences of Sillimanite
3.1km (1.9 miles) ⓘHelen Beryl Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
9.3km (5.8 miles) ⓘSilver Dollar Mine, Custer Mining District, Custer County, South Dakota, USA
9.4km (5.8 miles) ⓘRuby Reef Claims (Ruby Reef; Ruby Reef No. 1), Custer Mining District, Custer County, South Dakota, USA
9.8km (6.1 miles) ⓘBuster lode (Buster Dike Mica Mine), Custer, Custer Mining District, Custer County, South Dakota, USA
14.4km (9.0 miles) ⓘCuster Mountain lode (Snookum mine), Custer, Custer Mining District, Custer County, South Dakota, USA
15.9km (9.9 miles) ⓘVictory Mine, Custer, Custer Mining District, Custer County, South Dakota, USA
16.2km (10.1 miles) ⓘLucky Strike (Woods Mine), Pringle, Custer Mining District, Custer County, South Dakota, USA
17.7km (11.0 miles) ⓘMica King Mine (Lost Bonanza; Cook Mine), Custer Mining District, Custer County, South Dakota, USA
17.7km (11.0 miles) ⓘElkhorn Mine (Tinsley Mine), Custer, Custer Mining District, Custer County, South Dakota, USA
17.9km (11.1 miles) ⓘHot Shot mine, Custer, Custer Mining District, Custer County, South Dakota, USA
References
USGS Prof Paper 297D
 
and/or  
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