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Mount Grace, Warwick, Franklin Co., Massachusetts, USA
Detailed Mineral List:
| Dravite |  | |
|---|---|---|
| Formula: | Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH) | |
| Habit: | radiating prisms | |
| Colour: | dark brown | |
| Reference: | Francis, C. A. and D. E. Lange (1988): Four Occurrences of Dravite in Western New England (Rocks and Minerals 63:455). | |
| Photo: © 2006 Peter Cristofono. Dravite from Mount Grace, Warwick, Franklin Co., Massachusetts, USA | ||
| Epidote | ||
| Formula: | {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH) | |
| Reference: | Emerson, B. K. (1895): A Mineralogical Lexicon of Franklin, Hampshire, and Hampden Counties, Massachusetts (USGS Bulletin 126). | |
| 'Hornblende' | ||
| Reference: | Emerson, B. K. (1895): A Mineralogical Lexicon of Franklin, Hampshire, and Hampden Counties, Massachusetts (USGS Bulletin 126). | |
| Quartz | ||
| Formula: | SiO2 | |
| Reference: | Emerson, B. K. (1895): A Mineralogical Lexicon of Franklin, Hampshire, and Hampden Counties, Massachusetts (USGS Bulletin 126). | |
4 entries listed. 3 valid minerals.
References
Emerson, B. K. (1895): A Mineralogical Lexicon of Franklin, Hampshire, and Hampden Counties, Massachusetts (USGS Bulletin 126).
Francis, C. A. and D. E. Lange (1988): Four Occurrences of Dravite in Western New England (Rocks and Minerals 63:455).
Francis, C. A. and D. E. Lange (1988): Four Occurrences of Dravite in Western New England (Rocks and Minerals 63:455).
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Locality Updated: Cala d'Oliva, Asinara Island, Porto Torres, Sassari Province, Sardinia, ItalyFrom Alessandro Marini, 20th Jun 2013 12:20:09