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Cummingtonite : [ ][Mg2][Mg5][(OH)2|Si8O22] | |
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Cummingtonite Type Locality, Cummington, Hampshire Co., Massachusetts, USA Radiating sprays of crystal in a 2x4 inch specimen. In the Charles Creekmur collection. |
| © Charles Creekmur | Photo ID: 17868 View Count: 2275 |
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