Definition for CUM'MING-TON-ITE


A new mineral discovered by Dr. J. Porter, in Cummington and Plainfield, Hampshire County, Massachusetts, and named by Prof. Dewey. It is massive, the composition thin, columnar, scapiform, stellular, rather incoherent, fibers somewhat curved, luster silky, color ash-gray, translucent to opake, brittle. – Porter. Shepard.

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