Osborne Soapstone quarry, Blandford, Hampden Co., Massachusetts, USASoapstone quarry. Operated ca. 1830 - 1903.
Ultramafic tectonic "sliver" thrust fault deposit. (Note: The pegmatite minerals listed are found in small pegmatite sills adjacent to the quarry.)
| Chloritoid ?|
23 entries listed. 21 valid minerals.
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