Hemimorphite, Calcite
Summit Mine, Radersburg Mining District, Broadwater County, Montana, USA
11.0 x 9.7 x 3.6 cm. An impressive cabinet plate of lustrous, translucent and colorless hemimorphite blades to 2.5 cm from the less well-known Summit Mine of Montana. The hemimorphite blades have a rich, preferential coating of snow-white, globular calcite. The Summit Mine has produced some of the finest hemimorphite in the United States and this ...
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