Natrochalcite
Chuquicamata Mine, Chuquicamata District, Calama, El Loa Province, Antofagasta, Chile
7.3 x 5.5 x 4.5 cm. This is a rare hydrated, hydroxyl, sulfate, of sodium and copper that occurs primarily in arid areas, like Chuquicamata. The emerald green natrochalcite, in translucent crystals to .7 cm across, is color contrasted with its whitish-green matrix. Ex. Richard Hauck Collection.
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