M876 - Chrysocolla specimen. Peru.

Chrysocolla is a basic copper silicate. Hardness 2-4.

Chrysocolla is a secondary mineral and usually forms in the zone of alteration in all types of hydrothermal replacement deposits, where is it frequently associated with azurite, malachite, and limonite. Used as an ornamental stone.

The name Chrysocolla is also sometimes applied to chrysocolla-impregnated chalcedony (Agate), a much harder mineral. 

From  Perú.

Price:   $ 6.80 each