| Locality type: | Mine |
| Classification |
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| Species: | Ludlamite |
| Formula: | Fe32+(PO4)2 · 4H2O |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Phosphoferrite | 4 |
| Perloffite | 2 |
| Vivianite | 2 |
| Whitmoreite | 1 |
| Hureaulite | 1 |
| Data |
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| Mineral Data: | Click here to view Ludlamite data |
| Locality Data: | Click here to view Big Chief Mine, Glendale, Keystone Mining District, Pennington County, South Dakota, USA |
| Photo Gallery | View Gallery (3 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 49404 |
| Long-form Identifier: | 1:3:49404:1 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Ludlamite |
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| 1.9km (1.2 miles) | ⓘWood Tin mine, Harney City, Pennington County, South Dakota, USA |
| 2.0km (1.3 miles) | ⓘBarker-Ferguson Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA |
| 2.5km (1.5 miles) | ⓘWhite Cap Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA |
| 3.4km (2.1 miles) | ⓘEtta Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA |
| 5.8km (3.6 miles) | ⓘDan Patch Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA |
| 18.9km (11.7 miles) | ⓘBull Moose Mine, Custer, Custer Mining District, Custer County, South Dakota, USA |
| 28.4km (17.7 miles) | ⓘTip Top Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA |
| References |
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Big Chief Mine, Glendale, Keystone Mining District, Pennington County, South Dakota, USA