| Locality type: | Mine |
| Classification |
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| Species: | 'Manganese Oxides' (not an IMA approved species) |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Manganese Oxides data |
| Locality Data: | Click here to view Champion Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 733895 |
| Long-form Identifier: | 1:3:733895:3 |
| GUID (UUID V4): | 0 |
| References |
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Dunn, P. J., Peacor, D. R., Sturman, D. B., Ramik, R. A., Roberts, W. L., Nelen, J. A. (1986) Johnwalkite, the manganese analog of olmsteadite, from South Dakota. Neues Jahrbuch für Mineralogie - Monatshefte, 1986. 115-120 |
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