mineral

Azurite–malachite-bearing copper ore

Azurite (Cu₃(CO₃)₂(OH)₂) with malachite (Cu₂CO₃(OH)₂), in a copper-rich host rock

AI-generated identification · may be incorrect

Blue azurite and green malachite occur as earthy coatings or granular aggregates; Mohs hardness 3.5–4, vitreous to dull luster, monoclinic crystals, and excellent cleavage. The rough gray matrix may contain quartz, limonite, or other copper minerals.

Identified August 10, 2026More mineral →

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Physical properties

Formation & geological history

Forms in the oxidized, near-surface zones of copper deposits when circulating oxygenated water alters primary sulfides. It can form at many ages, commonly in arid or seasonally dry regions.

Uses & applications

Used as a copper ore, historical blue and green pigment, and collectible mineral specimen; generally unsuitable for jewelry because it is soft and fragile.

Geological facts

Azurite commonly alters into malachite, producing blue-green color zoning. Avoid prolonged water, acids, heat, and inhalation of dust because copper minerals can be toxic if ingested.

Field identification & locations

Identify by vivid royal-blue azurite, emerald-green malachite, and a blue-green streak; hardness and acid reaction help distinguish it from harder blue minerals. Common localities include Arizona, New Mexico, Morocco, Australia, Namibia, and France.