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Conichalcite has an unmistakable vivid green color. It is often found on a limonite matrix. Conichalcite forms in the oxidation zone of copper ore bodies. Other oxidation zone minerals include azurite, linarite and malachite.
CaCuAsO4(OH) - Calcium Copper Arsenate Hydroxide
Class:
Subclass:
Group:
Adelite
Yellow-green to emrald-green
Light green
Vitreous to greasy
Transparent to translucent
4.3
4.5
None
Uneven
Short prismatic crystals, botryoidal aggregates with structure, massive.
Non-fluorescent
Frequency:
Uncommon
Origin:
Secondary in copper deposits.

Occurence:
Otavi, Namibia; Tintic, Utah; Mapimi, Mexico; Bisbee, Arizona.
Application:
A minor ore of copper and as mineral specimens.

 
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