| Locality type: | Prospect |
| 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 Round Top Hill area quartz prospects, Chester, Hampden County, Massachusetts, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 29758 |
| Long-form Identifier: | 1:3:29758:1 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Biotite |
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| 1.3km (0.8 miles) | ⓘMelvin Mine, Chester Emery Mines, Chester, Hampden County, Massachusetts, USA |
| 2.0km (1.2 miles) | ⓘChester Emery Mines, Chester, Hampden County, Massachusetts, USA |
| 2.2km (1.4 miles) | ⓘWright Mine, Chester Emery Mines, Chester, Hampden County, Massachusetts, USA |
| 2.5km (1.6 miles) | ⓘOld Mine, Chester Emery Mines, Chester, Hampden County, Massachusetts, USA |
| 9.5km (5.9 miles) | ⓘBlandford mica mines, Blandford, Hampden County, Massachusetts, USA |
| 19.8km (12.3 miles) | ⓘClark Ledge pegmatite locality, Chesterfield, Hampshire County, Massachusetts, USA |
| 21.1km (13.1 miles) | ⓘLoudville Lead Mines (Manhan Lead-Silver Mine; Southampton Lead Mine; Northampton Lead Mine), Easthampton, Hampshire County, Massachusetts, USA |
| 26.9km (16.7 miles) | ⓘBetts Manganese Mines, Plainfield, Hampshire County, Massachusetts, USA |
| 31.6km (19.6 miles) | ⓘCrissey Quarry (Crissy Hill), Norfolk, Litchfield County, Connecticut, USA |
| 38.3km (23.8 miles) | ⓘForge Hill iron mines (Old Hawley iron mines), West Hawley, Hawley, Franklin County, Massachusetts, USA |
| References |
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