| Locality type: | Mine |
| Classification |
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| Species: | 'Tapiolite' (not an IMA approved species) |
| Formula: | (Fe,Mn)(Ta,Nb)2O6 |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Tapiolite 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: | 210892 |
| Long-form Identifier: | 1:3:210892:6 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Tapiolite |
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| 17.3km (10.7 miles) | ⓘEtta Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA |
| 17.7km (11.0 miles) | ⓘPeerless Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA |
| 17.9km (11.1 miles) | ⓘNickel Plate Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA |
| References |
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Old Mike mine, Custer, Custer Mining District, Custer County, South Dakota, USA