Conichalcite is a rare, secondary mineral found in the oxidized zones of Copper deposits. Its color includes several shades of green; grass-green, yellow-green and emerald-green, exhibits a sub-vitreous, greasy and earthy luster, and is often found encrusted on to limonitic rocks that have yellow to red colors. This green mineral is often associated and paired with Calcite, Azurite, Malachite, Rosasite, Erythrite, Chrysocolla and Quartz to name a few.
The crystal system for Conichalcite is orthorhombic, typically radial fibrous aggregates, botyroidal to reniform masses, compact crusts and massive. Euhedral crystals are very rare (Euhedral: Describing a crystal with a well-formed, sharp crystal face).
Quality Conichalcite specimens are limited. Notable localities include Chile, England, Spain, Namibia and the USA (Arizona).