Guide
Atacamite specimens for sale
17 for sale · $110–$7,500 USD
71 in the gallery
Atacamite is a copper chloride hydroxide mineral that forms as a secondary phase in oxidation zones of copper deposits. It typically presents a rich emerald to deep green color, with crystals ranging from acute to prismatic in habit and a vitreous to dull lustre. Fine specimens can show well-formed crystal terminations and striking color contrast against associated minerals such as malachite or azurite, and it is often found in slender, tabular crystals or in botryoidal masses.
- Formula
- Cu2(OH)3Cl
- Rarity
- Common
- Stability
- Stable
- Collector interest
- High Interest
- Classification notes
- Halide mineral; chloride (Cu, Cl, OH)
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About Atacamite
Notable localities include oxidized copper deposits in Chile and Peru, with additional finds in Australia, Mexico, and parts of the United States. Specimens from these regions are sought after for their vivid coloration and crystal clarity, which make Atacamite a compelling subject for collection and display. Collectors value well-formed crystals, color stability, and association with other copper minerals, which together enhance the aesthetic and scientific appeal of a specimen.
