| Locality type: | Prospect |
| 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 |
| Associated Minerals Based on Photo Data: |
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| Corundum | 2 |
| Plagioclase | 2 |
| Data |
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| Mineral Data: | Click here to view Biotite data |
| Locality Data: | Click here to view Gilliam prospect, Madison County, Montana, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 784533 |
| Long-form Identifier: | 1:3:784533:8 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Biotite |
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| 21.1km (13.1 miles) | ⓘGolden Sunlight Mine, Whitehall Mining District (Cardwell Mining District), Jefferson County, Montana, USA |
| 35.6km (22.1 miles) | ⓘPohndorf Mine, Toll Mountain, Boulder Batholith, Jefferson County, Montana, USA |
| 39.3km (24.4 miles) | ⓘBeartrap corundum deposit, Madison County, Montana, USA |
| 42.4km (26.4 miles) | ⓘSkunk Creek outcrops, Madison County, Montana, USA |
| 49.9km (31.0 miles) | ⓘGallatin Corundum deposit, Gallatin Gateway, Gallatin County, Montana, USA |
| 50.8km (31.6 miles) | ⓘElk Creek corundum deposit (Montana Mine; Gallatin deposit; Flying D), Gallatin County, Montana, USA |
| 51.8km (32.2 miles) | ⓘAltona Mine, Butte Mining District (Summit Valley Mining District), Silver Bow County, Montana, USA |
| 52.3km (32.5 miles) | ⓘContinental Pit, Butte Mining District (Summit Valley Mining District), Silver Bow County, Montana, USA |
| 52.3km (32.5 miles) | ⓘMontgomery Mine, Butte Mining District (Summit Valley Mining District), Silver Bow County, Montana, USA |
| 52.6km (32.7 miles) | ⓘSarsfield Mine, Butte Mining District (Summit Valley Mining District), Silver Bow County, Montana, USA |
| References |
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