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Muscovite from
Beecher No. 3, Beecher Lode, Custer, Custer Mining District, Custer County, South Dakota, USA


Classification
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Beecher No. 3, Beecher Lode, Custer, Custer Mining District, Custer County, South Dakota, USA
Data Identifiers
Mindat Occurrence Record ID:765608
Long-form Identifier:1:3:765608:8
GUID (UUID V4):0
Nearest other occurrences of Muscovite
1.8km (1.1 miles) ⓘHot Shot mine, Custer, Custer Mining District, Custer County, South Dakota, USA
2.0km (1.3 miles) ⓘElkhorn Mine (Tinsley Mine), Custer, Custer Mining District, Custer County, South Dakota, USA
2.3km (1.4 miles) ⓘPink Rose Lode Quarry (Scott Rose Quartz Mine; Scott Mine; Rose Quartz Mine), Custer, Custer Mining District, Custer County, South Dakota, USA
2.4km (1.5 miles) ⓘDominion Rose Group Claims, Custer, Custer Mining District, Custer County, South Dakota, USA
2.4km (1.5 miles) ⓘBurt Mica Mine (Bur; Burk), Custer Mining District, Custer County, South Dakota, USA
3.1km (1.9 miles) ⓘEarl Lode, Custer Mining District, Custer County, South Dakota, USA
3.2km (2.0 miles) ⓘBull Moose Mine, Custer, Custer Mining District, Custer County, South Dakota, USA
4.3km (2.7 miles) ⓘRed Deer Mine (Bellemare No. 1 and No. 4; Wildwood Claims), Custer, Custer Mining District, Custer County, South Dakota, USA
4.5km (2.8 miles) ⓘGlenwood Mica Mine (Hampton Mine), Custer Mining District, Custer County, South Dakota, USA
5.8km (3.6 miles) ⓘShamrock No. 1 Lode Mine, Custer, Custer Mining District, Custer County, South Dakota, USA
References
USGS Prof Paper 297D
Redden, Jack Allison (1959) Beryl deposits of the Beecher No.3 Black Diamond pegmatite, Custer County, South Dakota. USGS Bulletin: 1072-
 
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