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| Rare Caledonite Crystals. Credit: Christian Rewitzer |
Caledonite is an uncommon mineral found in the oxidized zones of copper-lead deposits. Caledonite, whose name derives from Caledonia, the historical name of its place of discovery (Scotland), is a richly colored blue-green sulfate-carbonate mineral of lead and copper with an orthorhombic crystal structure. Given that caledonite is found in oxidized copper/lead deposits, it is frequently found in association with other copper and lead minerals.
From: Victoria, Pozo Almonte, Iquique Province, Tarapacá Region, Chile
Luster: Vitreous
Crystal system: Orthorhombic
Mohs scale hardness: 2.5 - 3
Luster: Vitreous
Streak: Green-white; blue-green
