| 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 |
| Comments: | Fine to coarse-grained component of the schist. |
| Habit: | micaceous |
| Colour: | black |
| Quality for species: | Poor for species, only of interest for locality collectors. (#) |
| Abundance at site: | Very common |
| Confirmation |
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|
| Validity: | Confirmed |
| Confirmation Methods: | Visually Identified |
| Data |
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|
| Mineral Data: | Click here to view Biotite data |
| Locality Data: | Click here to view Interstate 84 interchange 26, Cheshire, New Haven County, Connecticut, USA |
| Data Identifiers |
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|
| Mindat Occurrence Record ID: | 893683 |
| Long-form Identifier: | 1:3:893683:7 |
| GUID (UUID V4): | f4acbc55-7902-40b7-b4f3-728e1ec1a97c |
| Nearest other occurrences of Biotite |
|---|
|
|
| 1.8km (1.1 miles) | ⓘProgress Lane construction site, Waterbury, New Haven County, Connecticut, USA |
| 11.0km (6.8 miles) | ⓘUnnamed quarry, Waterbury, New Haven County, Connecticut, USA |
| 15.5km (9.6 miles) | ⓘWaterbury Road quarry, Thomaston, Litchfield County, Connecticut, USA |
| 18.0km (11.2 miles) | ⓘThomaston, Litchfield County, Connecticut, USA |
| 20.0km (12.4 miles) | ⓘNonnewaug River Industrial Park, Woodbury, Litchfield County, Connecticut, USA |
| 20.0km (12.5 miles) | ⓘBristol Copper Mine, Bristol, Hartford County, Connecticut, USA |
| 21.0km (13.1 miles) | ⓘCurtis Quarry (Southford Quarry; Southford pegmatite; Southbury rose quartz quarry; Bridgeport Woodfinishing Co. Quarry; Hulls Hill), Southford, Southbury, New Haven County, Connecticut, USA |
| 21.2km (13.2 miles) | ⓘArsenic and nickel mine (Nickel Mine Brook), Seymour, New Haven County, Connecticut, USA |
| 21.9km (13.6 miles) | ⓘLead Mine Brook, Harwinton, Litchfield County, Connecticut, USA |
| 23.6km (14.7 miles) | ⓘDurham, Middlesex County, Connecticut, USA |
| References |
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