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Pyrolusite from
Case Group, Unorganized District, Custer Co., South Dakota, USA

Mineral Species
Quality of samples:not specified / average specimens
Validity:Believed Valid
References:U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Mineral Data:Click here to view Pyrolusite data
Locality Data:Click here to view Case Group, Unorganized District, Custer Co., South Dakota, USA
Nearest other occurrences of Pyrolusite
2.2km (1.4 miles) A C & N Group, Unorganized District, Custer Co., South Dakota, USA
4.1km (2.6 miles) B Jack Pot Group, Unorganized District, Custer Co., South Dakota, USA
25.1km (15.6 miles) C Tin Mountain Mine, Fourmile, Custer District, Custer Co., South Dakota, USA
47.5km (29.5 miles) D Peerless Mine (Monitor; Monarch; Protector), Keystone, Keystone District, Pennington Co., South Dakota, USA
87.6km (54.4 miles) E Hoffman Iron Deposit Mine, Lead District, Lawrence Co., South Dakota, USA
88.5km (55.0 miles) F Wasp No. 2 Mine (Little Blue Mine), Yellow Creek area, Lawrence Co., South Dakota, USA
122.7km (76.3 miles) G Unidentified Gold Occurrence (MRDS - 10080787), Bear Lodge District, Crook Co., Wyoming, USA
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