| Locality type: | Tunnel |
| Classification |
|---|
|
| Species: | 'Biotite' (not an IMA approved species) |
| Formula: | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Confirmation |
|---|
|
| Validity: | Believed Valid |
| Data |
|---|
|
| Mineral Data: | Click here to view Biotite data |
| Locality Data: | Click here to view Hudson Tunnel, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA |
| Data Identifiers |
|---|
|
| Mindat Occurrence Record ID: | 493333 |
| Long-form Identifier: | 1:3:493333:5 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Biotite |
|---|
|
|
| 2.0km (1.2 miles) | ⓘWaterloo Mine, Russell Gulch, Gilpin County, Colorado, USA |
| 4.2km (2.6 miles) | ⓘBurlington - Iowa Group, Central City Mining District (Central Mining District), Gilpin County, Colorado, USA |
| 5.1km (3.2 miles) | ⓘMartha E. Adit, Jackson Mining District (Corral Mining District), Clear Creek County, Colorado, USA |
| 5.6km (3.5 miles) | ⓘBell of the West, Lamartine Mining District, Clear Creek County, Colorado, USA |
| 6.4km (3.9 miles) | ⓘDevils Canyon, Clear Creek County, Colorado, USA |
| 7.8km (4.8 miles) | ⓘAjax Mica Mine (Floyd Hill Mica Mine), Clear Creek Pegmatite Province, Clear Creek County, Colorado, USA |
| 8.0km (4.9 miles) | ⓘGrover Mine (Grover pegmatite; Windsor), Clear Creek County, Colorado, USA |
| 8.8km (5.5 miles) | ⓘMurry Mine, Lawson Mining District, Clear Creek County, Colorado, USA |
| 9.9km (6.2 miles) | ⓘUnnamed pegmatite, Mount Blue Sky (Mount Evans), Clear Creek County, Colorado, USA |
| 11.9km (7.4 miles) | ⓘNye-Mathews mine (Wilma mine), Apex Mining District (Kingston Mining District; Pine Mining District), Gilpin County, Colorado, USA |
| References |
|---|
|
|
|
