History · Geology
About Chuquicamata
Chuquicamata in northern Chile is one of the world’s largest open-pit copper mines and the most prolific producer of secondary Cu chloride minerals — atacamite, paratacamite, antlerite, and rare Cl-bearing Cu species. The hyper-arid Atacama Desert preserves Cl-rich oxidation products found nowhere else at scale.
Geology
The deposit is a Late Eocene porphyry Cu-Mo system overlain by a thick supergene oxidation/enrichment zone. The unique chloride-rich groundwaters of the Atacama Desert produced the famous emerald-green atacamite.
Notable Minerals
Atacamite (the type-locality species, brilliant green prismatic crystals — world-best), paratacamite, chrysocolla, antlerite, brochantite, malachite, azurite, cuprite, chalcocite, native copper. Also rare clinoatacamite.
Collector Notes
Chuquicamata atacamite specimens with sharp green crystals on copper or chrysocolla matrix are signature Chilean Cu collector pieces. The mine’s scale and ore grade have shaped 20th-century Cu mineralogy.
Minerals Produced Here
- Atacamite (氯铜矿)
- Azurite (蓝铜矿)
- Brochantite (水胆矾)
- Chalcocite (辉铜矿)
- Chrysocolla (硅孔雀石)
- Copper (Native) (自然铜)
- Cuprite (赤铜矿)
- Malachite (孔雀石)
