| Locality type: | Mine |
| Classification |
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| Species: | Muscovite |
| Formula: | KAl2(AlSi3O10)(OH)2 |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Muscovite data |
| Locality Data: | Click here to view New York Mine (Westinghouse No. 1 Mine), Custer, Custer Mining District, Custer County, South Dakota, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 211418 |
| Long-form Identifier: | 1:3:211418:7 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Muscovite |
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| 1.4km (0.9 miles) | ⓘHelen Beryl Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA |
| 2.0km (1.2 miles) | ⓘTip Top Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA |
| 2.2km (1.4 miles) | ⓘBig Tom Mine (Kem Lode), Custer Mining District, Custer County, South Dakota, USA |
| 2.6km (1.6 miles) | ⓘEruption Lode (Volcano Lode), Custer Mining District, Custer County, South Dakota, USA |
| 3.0km (1.9 miles) | ⓘMichaud Prospect, Unorganized mining district [1], Custer County, South Dakota, USA |
| 3.1km (1.9 miles) | ⓘLincoln No. 7 Lode Prospect, Custer Mining District, Custer County, South Dakota, USA |
| 3.1km (1.9 miles) | ⓘCorky Claim, Unorganized mining district [1], Custer County, South Dakota, USA |
| 3.1km (1.9 miles) | ⓘRainbow No. 4 Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA |
| 3.2km (2.0 miles) | ⓘRed Spar Mine, Unorganized mining district [1], Custer County, South Dakota, USA |
| 4.0km (2.5 miles) | ⓘRed Bird pegmatite (McLaren Mine), Custer, Custer Mining District, Custer County, South Dakota, USA |
| References |
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