| Locality type: | Prospect |
| 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 Lake Mica Prospect (Lakeside), Unorganized mining district [1], Custer County, South Dakota, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 382994 |
| Long-form Identifier: | 1:3:382994:3 |
| GUID (UUID V4): | 94d2123c-cdda-4626-af3b-87b3c3a4b28b |
| Nearest other occurrences of Biotite |
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| 3.1km (1.9 miles) | ⓘBlack Elk Peak (Harney Peak), Pennington County, South Dakota, USA |
| 3.9km (2.4 miles) | ⓘTin Queen Mine (White Blowout Mine), Hill City Mining District, Pennington County, South Dakota, USA |
| 4.4km (2.7 miles) | ⓘReinbold Claim (Tungsten No. 1-3 Claims), Hill City Mining District, Pennington County, South Dakota, USA |
| 5.4km (3.4 miles) | ⓘU.S. highways 16/385 & State route 87 intersection area, Oreville Mining District, Pennington County, South Dakota, USA |
| 5.7km (3.5 miles) | ⓘOreville, Custer County, South Dakota, USA |
| 6.1km (3.8 miles) | ⓘHofert Arcade (Victory No. 1 Prospect), Custer Mining District, Custer County, South Dakota, USA |
| 7.0km (4.3 miles) | ⓘBig Horn Lode Prospect, Custer Mining District, Custer County, South Dakota, USA |
| 7.5km (4.7 miles) | ⓘSunshine Mica Prospect, Custer Mining District, Custer County, South Dakota, USA |
| 7.6km (4.7 miles) | ⓘKnowles lode claim, Custer, Custer Mining District, Custer County, South Dakota, USA |
| 7.8km (4.8 miles) | ⓘSurprise Mica Mine, Custer Mining District, Custer County, South Dakota, USA |
| References |
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