| Locality type: | Prospect |
| 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 Old Missouri Prospect, Custer Mining District, Custer County, South Dakota, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 383164 |
| Long-form Identifier: | 1:3:383164:9 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Muscovite |
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| 1.8km (1.1 miles) | ⓘWonder lode (Duncan's Little Wonder mine), Custer, Custer Mining District, Custer County, South Dakota, USA |
| 2.9km (1.8 miles) | ⓘRed Bird pegmatite (McLaren Mine), Custer, Custer Mining District, Custer County, South Dakota, USA |
| 3.3km (2.1 miles) | ⓘRay Prospect (Ray Mica Prospect), Custer Mining District, Custer County, South Dakota, USA |
| 3.8km (2.4 miles) | ⓘHelicopter mine, Custer Mining District, Custer County, South Dakota, USA |
| 4.0km (2.5 miles) | ⓘSoda Spar Pegmatite, Glendale, Keystone Mining District, Pennington County, South Dakota, USA |
| 4.0km (2.5 miles) | ⓘMarydale Prospect, Custer Mining District, Custer County, South Dakota, USA |
| 4.1km (2.5 miles) | ⓘSoda Spar Mine, Custer Mining District, Custer County, South Dakota, USA |
| 4.2km (2.6 miles) | ⓘSanator area, Custer County, South Dakota, USA |
| 4.3km (2.7 miles) | ⓘLucky Twist Mine (Sutherland Mine), Custer Mining District, Custer County, South Dakota, USA |
| 4.5km (2.8 miles) | ⓘKaliko No. 1 Mine, Pringle, Custer Mining District, Custer County, South Dakota, USA |
| References |
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