mineral

Malachite in Host Rock

Malachite - Cu2CO3(OH)2

Hardness: 3.5-4.0; Color: bright green to dark green; Luster: vitreous to silky or dull; Crystal system: monoclinic; Cleavage: perfect in one direction; Specific Gravity: 3.6-4.0

Hardness: 3
Color: bright green to dark green
Luster: vitreous to silky or dull

Identified June 26, 2026More mineral →

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Physical properties

Hardness: 3.5-4.0; Color: bright green to dark green; Luster: vitreous to silky or dull; Crystal system: monoclinic; Cleavage: perfect in one direction; Specific Gravity: 3.6-4.0

Formation & geological history

Formed through the weathering and oxidation of primary copper sulfide minerals. It typically occurs in the oxidized zones of copper deposits, often in carbonate-rich sedimentary environments.

Uses & applications

A major ore of copper; widely used as a decorative stone, as a gemstone for jewelry, and historically as a pigment for paint.

Geological facts

Malachite is often found together with azurite, another copper carbonate. It was used by ancient Egyptians as a cosmetic and eyeshadow as early as 4000 BC.

Field identification & locations

Identify in the field by its distinct green color and association with copper-rich areas. Collectors look for botryoidal (grape-like) habits or bands of various green shades. Found commonly in copper mines in the DRC, Russia, and Arizona.