mineral

Chrysocolla-bearing copper ore

Chrysocolla (hydrated copper aluminum silicate), commonly mixed with malachite, quartz, and iron oxides

AI-generated identification · may be incorrect

Usually blue-green to turquoise-green, earthy to vitreous or waxy luster, opaque, and commonly botryoidal or massive; Mohs hardness 2–4, with no prominent cleavage. The specimen appears porous and matrix-rich, with brown iron-oxide staining.

Identified September 13, 2026More mineral →

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Physical properties

Formation & geological history

Forms as a secondary copper mineral in oxidized zones above copper sulfide deposits, typically during weathering of copper ores in arid to semi-arid environments. Its age depends on the host deposit, often ranging from Cenozoic weathering products to much older ore systems.

Uses & applications

Used as a copper ore when sufficiently concentrated and as an ornamental or lapidary material; attractive pieces may be polished for cabochons or display.

Geological facts

Chrysocolla is often confused with turquoise or dyed stone; abundant silica can make it harder and more durable. Green-blue coloration reflects hydrated copper minerals.

Field identification & locations

Identify by its blue-green color, low hardness, earthy texture, and copper staining; common localities include Arizona, Nevada, Chile, Peru, the Democratic Republic of the Congo, and Australia. Acid testing and laboratory analysis are preferable for confirmation.