| 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 Grafton Quarry, Grafton, Windham County, Vermont, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 980931 |
| Long-form Identifier: | 1:3:980931:4 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Biotite |
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| 5.7km (3.6 miles) | ⓘBemis Limestone Quarry, Athens, Athens, Windham County, Vermont, USA |
| 11.1km (6.9 miles) | ⓘHolden Quarry, Chester, Windsor County, Vermont, USA |
| 11.4km (7.1 miles) | ⓘBellows Falls, Rockingham, Windham County, Vermont, USA |
| 11.8km (7.3 miles) | ⓘHamm Mine, Windham, Windham County, Vermont, USA |
| 14.2km (8.8 miles) | ⓘCarlton Quarry, Chester, Windsor County, Vermont, USA |
| 18.5km (11.5 miles) | ⓘUS highway 5 road cut, Putney, Windham County, Vermont, USA |
| 19.5km (12.1 miles) | ⓘGassetts, Chester, Windsor County, Vermont, USA |
| 20.3km (12.6 miles) | ⓘGeorge Porter Quarry, Alstead, Cheshire County, New Hampshire, USA |
| 21.1km (13.1 miles) | ⓘYuhas No. 1 Quarry, Acworth, Sullivan County, New Hampshire, USA |
| 21.3km (13.2 miles) | ⓘYuhas No. 2 Quarry, Acworth, Sullivan County, New Hampshire, USA |
| References |
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