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RM3175   Chalcocite
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Groups of very well defined chalcocite crystals, with hexagonal pyramidal shapes, with striated faces perpendicular to the main axis and forming aggregates. Metallic gray luster with bluish iridescences. They are disposed on a matrix with brilliant quartz microcrystals. A classic from Kazakhstan, each day scarcer.


Size: 7.5 x 4.5 x 3.8 cm.
Main crystal: 12 mm.

Col. J. Viñals.


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