It is typically found as glassy botryoidal or rounded masses and crusts, or vein fillings. Because of its light color, it is sometimes confused with turquoise or malachite. Commonly it occurs only as pourous crusts unsuitable for gem use, but high quality, gem grade chrysocolla can be translucent and is highly prized.
It is of secondary origin and forms in the oxidation zones of copper ore bodies. Associated minerals are quartz, limonite, azurite, malachite, cuprite, and other secondary copper minerals.
Chrysocolla has an attractive green to blue-green colour and is a minor ore of copper, having a hardness of 2.5 to 3.5.
Notable occurrences include Israel, Democratic Republic of Congo, Chile, Cornwall in England, and Arizona, Utah, New Mexico and Pennsylvania in the United States.
Chrysocolla - Important Characteristics
Mohs scale hardness
Blue, blue-green, green
Massive, nodular, botryoidal
Brittle to sectile
2.5 - 3.5
Vitreous to dull
white to a blue-green color
Translucent to opaque
1.9 - 2.4
It is used as an ornamental Gemstone
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