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


Classification
Species:Grunerite
Formula:◻Fe22+Fe52+(Si8O22)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Grunerite 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:384142
Long-form Identifier:1:3:384142:6
GUID (UUID V4):0
Nearest other occurrences of Grunerite
18.4km (11.4 miles) ⓘEdison Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
18.9km (11.7 miles) ⓘGrand Junction and Hartford Group, Unorganized mining district [1], Custer County, South Dakota, USA
72.4km (45.0 miles) ⓘHomestake Mine, Lead, Lead Mining District, Lawrence County, South Dakota, USA
References
Redden, Jack Allison (1959) Beryl deposits of the Beecher No.3 Black Diamond pegmatite, Custer County, South Dakota. USGS Bulletin: 1072-
Roberts, Willard Lincoln, Rapp, George Jr. (1965) Mineralogy of the Black Hills. Bulletin 18. South Dakota School of Mines and Technology
 
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