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Biotite from
Mountain Beryl Claim, Pringle, Custer Mining District, Custer County, South Dakota, USA


Locality type:Claim
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 Mountain Beryl Claim, Pringle, Custer Mining District, Custer County, South Dakota, USA
Data Identifiers
Mindat Occurrence Record ID:383138
Long-form Identifier:1:3:383138:0
GUID (UUID V4):0
Nearest other occurrences of Biotite
0.3km (0.2 miles) ⓘKaliko No. 1 Mine, Pringle, Custer Mining District, Custer County, South Dakota, USA
3.6km (2.2 miles) ⓘWhite Elephant Mine, Cicero Peak, Pringle, Custer Mining District, Custer County, South Dakota, USA
4.8km (3.0 miles) ⓘOld Missouri Prospect, Custer Mining District, Custer County, South Dakota, USA
6.3km (3.9 miles) ⓘGreene pegmatite (Red Monster Mine; Pink Monster Mine), Pringle, Custer Mining District, Custer County, South Dakota, USA
7.4km (4.6 miles) ⓘMarydale Prospect, Custer Mining District, Custer County, South Dakota, USA
7.6km (4.7 miles) ⓘRay Prospect (Ray Mica Prospect), Custer Mining District, Custer County, South Dakota, USA
10.1km (6.3 miles) ⓘSilver Dollar Mine, Custer Mining District, Custer County, South Dakota, USA
10.3km (6.4 miles) ⓘTip Top Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
10.6km (6.6 miles) ⓘWhite Bear Mine (Gamber Mine), Custer, Custer Mining District, Custer County, South Dakota, USA
11.2km (7.0 miles) ⓘHelen Beryl Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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