| Locality type: | Mine |
| Classification |
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| Species: | Beryl |
| Formula: | Be3Al2(Si6O18) |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Beryl data |
| Locality Data: | Click here to view Old Mike mine (Great Northern; Old Mike M.S.2212), Custer, Custer Mining District, Custer County, South Dakota, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 210882 |
| Long-form Identifier: | 1:3:210882:7 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Beryl |
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| 3.3km (2.0 miles) | ⓘSky Lode Occurrence, Unorganized mining district [1], Custer County, South Dakota, USA |
| 3.4km (2.1 miles) | ⓘWilhelm Mine, Custer Mining District, Custer County, South Dakota, USA |
| 3.4km (2.1 miles) | ⓘBallard Mine, Custer Mining District, Custer County, South Dakota, USA |
| 3.4km (2.1 miles) | ⓘMilton Mine, Custer Mining District, Custer County, South Dakota, USA |
| 3.5km (2.1 miles) | ⓘCrown Mine (McMackin Mine), Custer, Custer Mining District, Custer County, South Dakota, USA |
| 3.5km (2.2 miles) | ⓘHigh Climb Mine, Custer, Custer Mining District, Custer County, South Dakota, USA |
| 3.9km (2.4 miles) | ⓘSunshine Mica Prospect, Custer Mining District, Custer County, South Dakota, USA |
| 4.0km (2.5 miles) | ⓘKnowles lode claim, Custer, Custer Mining District, Custer County, South Dakota, USA |
| 4.1km (2.6 miles) | ⓘCheyenne Lode Prospect, Unorganized mining district [1], Custer County, South Dakota, USA |
| 4.4km (2.7 miles) | ⓘHomestead No. 2 Prospect, Custer Mining District, Custer County, South Dakota, USA |
| References |
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