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Biotite from
Wright Mica Lode, Custer Mining District, Custer County, South Dakota, USA


Locality type:Lode
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Wright Mica Lode, Custer Mining District, Custer County, South Dakota, USA
Data Identifiers
Mindat Occurrence Record ID:765667
Long-form Identifier:1:3:765667:5
GUID (UUID V4):0
Nearest other occurrences of Biotite
1.1km (0.7 miles) ⓘTin Mountain Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
2.4km (1.5 miles) ⓘRainbow No. 4 Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
3.3km (2.0 miles) ⓘBig Tom Mine (Kem Lode), Custer Mining District, Custer County, South Dakota, USA
4.2km (2.6 miles) ⓘHelen Beryl Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
4.9km (3.0 miles) ⓘTip Top Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
5.5km (3.4 miles) ⓘDorothy V Prospect (Van), Custer Mining District, Custer County, South Dakota, USA
7.6km (4.7 miles) ⓘBuster lode (Buster Dike Mica Mine), Custer, Custer Mining District, Custer County, South Dakota, USA
7.7km (4.8 miles) ⓘLucky Star Prospect, Custer Mining District, Custer County, South Dakota, USA
7.9km (4.9 miles) ⓘSilver Dollar Mine, Custer Mining District, Custer County, South Dakota, USA
8.1km (5.0 miles) ⓘWhite Bear Mine (Gamber Mine), Custer, Custer Mining District, Custer County, South Dakota, USA
References
USGS Prof Paper 297D
 
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