mineral
Chrysocolla
Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O
AI-generated identification · may be incorrectMohs hardness of 2.5 to 3.5, vivid blue-green to cyan color, vitreous to earthy luster, and an amorphous or cryptocrystalline structure.
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Physical properties
Mohs hardness of 2.5 to 3.5, vivid blue-green to cyan color, vitreous to earthy luster, and an amorphous or cryptocrystalline structure.
Formation & geological history
Forms as a secondary mineral in the oxidation zones of copper ore bodies, commonly deposited from aqueous solutions.
Uses & applications
Used primarily as a gemstone in cabochons, carvings, and inlay jewelry, as well as a minor copper ore.
Geological facts
Chrysocolla is often found mixed with quartz, malachite, and azurite, creating striking multicolored patterns known as eilat stone or gem silica when quartz-infused.
Field identification & locations
Identified by its distinctive bright cyan coloration and low hardness; globally mined in regions with rich copper deposits like the southwestern United States and Chile.
