Mineralpedia Details for Atacamite
Atacamite
- Formula
- Cu2Cl(OH)3
- Crystal System
- Orthorhombic
- Crystal Habit
- Euhedral Crystals, Fibrous, Granular
- Cleavage
- Perfect, None, None
- Luster
- Adamantine
- Color
- green, yellow, yellow green, black green
- Streak
- apple green
- Class
- Orthorhombic - Dipyramidal
- Fracture
- Conchoidal
- Hardness
- 3-3.5
- WebMineral
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Atacamite from Chuquicamata mine, El Loa Prov., Antofagasta, Chile
Deep green lustrous crystals of Atacamite to 2mm occupying large vug.
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Atacamite from La Farola mine, Tierra Amarilla, Copiapó, Chile
Deep dark green long bladed crystals to 6mm.
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Atacamite from Kintore Opencut, Broken Hill, New South Wales, Australia
Beautiful deep emerald green bladed crystals of atacamite about to 0.75mm. The Chlorargyrite occurs as tiny tellow crystals in corroded and altered Galena.
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Atacamite from Southwest mine, Bisbee, Cochise Co., Arizona, United States
A very complex specimen with a rather large single and thick prismatic crystal of Atacamite to 4mm and a few smaller. There are also numerous Cuprite crystals totally covered with acicular Connellite and an unknown acicular sprays of green crystals, perhaps just Malachite.
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Atacamite from Mt. Gunson mine, Pernatty Lagoon, South Australia, Australia
Nicely crystallized acicular Atacamite crystals in free-standing sprays to 1mm.
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