| Locality type: | Quarry |
| 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 George Porter Quarry, Alstead, Cheshire County, New Hampshire, USA |
| Data Identifiers |
|---|
|
| Mindat Occurrence Record ID: | 50967 |
| Long-form Identifier: | 1:3:50967:1 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Biotite |
|---|
|
|
| 2.9km (1.8 miles) | ⓘAllen Quarry, Alstead, Cheshire County, New Hampshire, USA |
| 3.3km (2.1 miles) | ⓘColony Quarry, Alstead, Cheshire County, New Hampshire, USA |
| 3.7km (2.3 miles) | ⓘYuhas No. 2 Quarry, Acworth, Sullivan County, New Hampshire, USA |
| 3.9km (2.4 miles) | ⓘYuhas No. 1 Quarry, Acworth, Sullivan County, New Hampshire, USA |
| 4.6km (2.9 miles) | ⓘProvencher Quarry, Alstead, Cheshire County, New Hampshire, USA |
| 4.8km (3.0 miles) | ⓘFitzgibbons Mine, Alstead, Cheshire County, New Hampshire, USA |
| 6.0km (3.7 miles) | ⓘBritton Quarry, Alstead, Cheshire County, New Hampshire, USA |
| 6.3km (3.9 miles) | ⓘBeryl Mountain Quarry, South Acworth, Acworth, Sullivan County, New Hampshire, USA |
| 7.1km (4.4 miles) | ⓘBig Mine, Alstead, Cheshire County, New Hampshire, USA |
| 7.9km (4.9 miles) | ⓘBurroughs beryl prospect, Alstead, Cheshire County, New Hampshire, USA |
| References |
|---|
|
Cameron, Eugene N., Larrabee, David M., McNair, Andrew H., Page, James J., Stewart, Glen W., Shainin, Vincent E. (1954) Pegmatite Investigations, 1942-45, in New England. Geological Survey Professional Paper 255. US Geological Survey doi:10.3133/pp255 |
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