| Locality type: | Mine |
| Classification |
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| Species: | Heterosite |
| Formula: | (Fe3+,Mn3+)PO4 |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Heterosite data |
| Locality Data: | Click here to view Barker-Ferguson Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 212296 |
| Long-form Identifier: | 1:3:212296:0 |
| GUID (UUID V4): | cfd29e7f-6cae-4a2c-b8f3-3b5670af31b6 |
| References |
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| Reference Search (possible matching items) |
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 | | Report (issue) | | Some Pegmatites in the Southern Black Hills South Dakota GEOLOGICAL SURVEY PROFESSIONAL PAPER 297-E ...Some Pegmatites in the Southern Black Hills South Dakota By JAMES J. NORTON and others PEGMATITES AND...Exploration techniques....__________________________ Barker-Ferguson beryl mine________________________ Big Chief...prospect.____________________________ Etta spodumene mine.______________________________ Geology-___ . __...303 305 305 307 310 312 314 315 Etta spodumene mine Continued Mineral deposits____--__--------------_-_------Eureka |
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