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Gypsum from
Boscobel mine (Golden Reward group; Double Standard mine), Ruby Basin Mining District, Lawrence Co., South Dakota, USA

Locality type:Mine
Classification
Species:Gypsum
Formula:CaSO4 · 2H2O
Confirmation
Validity:Believed Valid
References
References:SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
Data
Mineral Data:Click here to view Gypsum data
Locality Data:Click here to view Boscobel mine (Golden Reward group; Double Standard mine), Ruby Basin Mining District, Lawrence Co., South Dakota, USA
Nearest other occurrences of Gypsum
0.8km (0.5 miles) Ross Hannibal Mine (North Star Mine; Hannibal Mine; and Mikado Mine), Lead Mining District, Lawrence Co., South Dakota, USA
31.4km (19.5 miles) Tilford Mine (U.S. Gypsum Company Mine), Unorganized mining district [4], Meade Co., South Dakota, USA
35.1km (21.8 miles) U.S. Gypsum Piedmont Operation, Unorganized mining district [4], Meade Co., South Dakota, USA
36.1km (22.4 miles) Vore Buffalo Jump Sinkhole, Bear Lodge Mining District, Crook Co., Wyoming, USA
46.7km (29.0 miles) Wildcat Cave, Rapid City, Pennington Co., South Dakota, USA
49.7km (30.9 miles) Brooks Cave, Rapid City, Pennington Co., South Dakota, USA
61.8km (38.4 miles) Big Chief Mine (Johnson pegmatite), Glendale, Keystone Mining District, Pennington Co., South Dakota, USA
65.0km (40.4 miles) Hell Canyon, Dewey, Custer Co., South Dakota, USA
66.8km (41.5 miles) Jewel Cave, Jewel Cave National Monument, Custer Co., South Dakota, USA
69.0km (42.9 miles) Bull Moose Mine (Bull Moose pegmatite; Bull Moose lodes), Custer, Custer Mining District, Custer Co., South Dakota, USA
 
Mineral and/or Locality  
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