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RM1257   Calcite on quartz

La Viesca mine, La Collada area, Huergo, Siero, Asturias, Spain

A curious calcite specimen that shows the top faces of the scalenohedron, with a translucent crystal core area and the outer areas colorless, highly visible at the acute termination. Well defined, brilliant and on a matrix of quartz crystals. Nice.


Size: 10.0 x 5.5 x 5.1 cm.
Main crystal: 6.8 x 3.5 cm.
Found in 2015.

Fluorescent under long wave UV
 
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