| Locality type: | Quarry |
| Classification |
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| Species: | 'Biotite' (not an IMA approved species) |
| Formula: | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Biotite data |
| Locality Data: | Click here to view CN Rocky Islet quarry (Seven Mile quarry), Watten Township, Rainy River District, Ontario, Canada |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 556087 |
| Long-form Identifier: | 1:3:556087:5 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Biotite |
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| 68.4km (42.5 miles) | ⓘVermilion River Mines, Saint Louis County, Minnesota, USA |
| 83.2km (51.7 miles) | ⓘTwentieth Century Mine, Lower Manitou Lake Area, Kenora District, Ontario, Canada |
| 85.8km (53.3 miles) | ⓘSamuels Lake intrusive, Rainy River District, Ontario, Canada |
| References |
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