E Verbeek (post by M Cole

Aug 9, 2016

Powellite on Calcite, Sterling Mine, Sterling Hill, Ogdensburg, N.J

Gravity tram, 20 ft below 180 level at 1040 N, 1270 W, Sterling mine, Ogdensburg, NJ. (Per R. Bostwick: That particular find of powellite comes from the gravity tram, 20' below the 180 level, mine coordinates 1270W, 1040N) A large grain of dark brown, glassy powellite in a matrix of coarse-grained, red-fl. calcite and green amphibole. This powellite grain, 2 cm across, is unusually large; most are the size of a pea or smaller. Specimen size: 7 x 6 x 4.5 cm.

Photo: E. Verbeek

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