Rock Identifier
Malachite (Copper Carbonate Hydroxide, Cu2CO3(OH)2) — mineral
mineral

Malachite

Copper Carbonate Hydroxide, Cu2CO3(OH)2

AI-generated identification · may be incorrect

Mohs hardness of 3.5 to 4, vibrant green color with distinctive concentric banding, vitreous to silky luster, and monoclinic crystal system.

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Physical properties

Mohs hardness of 3.5 to 4, vibrant green color with distinctive concentric banding, vitreous to silky luster, and monoclinic crystal system.

Formation & geological history

Forms as a supergene mineral in the oxidation zone of copper ore deposits, typically in limestone environments.

Uses & applications

Widely used as a gemstone for jewelry, ornamental carvings, and historically as a green mineral pigment.

Geological facts

Malachite has been mined for over 4,000 years, with ancient Egyptians using it for jewelry, amulets, and powdered eye makeup.

Field identification & locations

Easily identified by its characteristic green color, banded patterns, and effervescence when tested with hydrochloric acid.