| Locality type: | Mine |
| Classification |
|---|
|
| Species: | 'Plagioclase' (not an IMA approved species) |
| Formula: | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Confirmation |
|---|
|
| Validity: | Believed Valid |
| Data |
|---|
|
| Mineral Data: | Click here to view Plagioclase data |
| Locality Data: | Click here to view French Mine, Alstead, Cheshire County, New Hampshire, USA |
| Data Identifiers |
|---|
|
| Mindat Occurrence Record ID: | 653486 |
| Long-form Identifier: | 1:3:653486:8 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Plagioclase |
|---|
|
|
| 0.3km (0.2 miles) | ⓘBurroughs beryl prospect, Alstead, Cheshire County, New Hampshire, USA |
| 0.4km (0.2 miles) | ⓘBlister Mine, Alstead, Cheshire County, New Hampshire, USA |
| 0.9km (0.5 miles) | ⓘNichols Quarry, Gilsum, Cheshire County, New Hampshire, USA |
| 1.5km (0.9 miles) | ⓘBig Mine, Alstead, Cheshire County, New Hampshire, USA |
| 2.2km (1.4 miles) | ⓘKirk No. 2 Quarry, Gilsum, Cheshire County, New Hampshire, USA |
| 2.8km (1.8 miles) | ⓘBritton Quarry, Alstead, Cheshire County, New Hampshire, USA |
| 4.4km (2.7 miles) | ⓘWhite Quarry, Gilsum, Cheshire County, New Hampshire, USA |
| 5.0km (3.1 miles) | ⓘKirk No. 1 Quarry, Gilsum, Cheshire County, New Hampshire, USA |
| 15.8km (9.8 miles) | ⓘOsgood Graphite Mine, Nelson, Cheshire County, New Hampshire, USA |
| 27.1km (16.8 miles) | ⓘMonadnock Mountain, Jaffrey, 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 |
|
