| Locality type: | Peak |
| Classification |
|---|
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| Species: | 'Biotite' (not an IMA approved species) |
| Formula: | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Confirmation |
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|
| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Biotite data |
| Locality Data: | Click here to view Black Elk Peak (Harney Peak), Pennington County, South Dakota, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 386193 |
| Long-form Identifier: | 1:3:386193:6 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Biotite |
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| 3.1km (1.9 miles) | ⓘLake Mica Prospect (Lakeside), Unorganized mining district [1], Custer County, South Dakota, USA |
| 4.1km (2.5 miles) | ⓘReinbold Claim (Tungsten No. 1-3 Claims), Hill City Mining District, Pennington County, South Dakota, USA |
| 5.1km (3.2 miles) | ⓘTin Queen Mine (White Blowout Mine), Hill City Mining District, Pennington County, South Dakota, USA |
| 5.2km (3.3 miles) | ⓘU.S. highways 16/385 & State route 87 intersection area, Oreville Mining District, Pennington County, South Dakota, USA |
| 5.7km (3.5 miles) | ⓘGold Medal Group (Golden Summit Group), Hill City Mining District, Pennington County, South Dakota, USA |
| 7.2km (4.5 miles) | ⓘOreville, Custer County, South Dakota, USA |
| 7.9km (4.9 miles) | ⓘDan Patch Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA |
| 8.1km (5.0 miles) | ⓘHofert Arcade (Victory No. 1 Prospect), Custer Mining District, Custer County, South Dakota, USA |
| 8.2km (5.1 miles) | ⓘHill City Mining District, Pennington County, South Dakota, USA |
| 8.8km (5.5 miles) | ⓘMonte Carlo Prospect, Keystone Mining District, Pennington County, South Dakota, USA |
| References |
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