Chalcoalumite, Cyanotrichite, Malachite, Gypsum
Copaquire Cu deposit, Collahuasi mining district, Pica, Tamarugal Province, Tarapacá, Chile
4.8 x 4.8 x 2.8 cm. Chalcoalumite is a rare hydrated copper aluminum sulfate. Chalcoalumite and cyanotrichite were recently identified and analyzed from this porphyry copper deposit in Chile. The striking vug in this sculptural, two-sided matrix is richly and beautifully lined with bright blue, botryoidal chalcoalumite, sparkly azure-blue ...
© Rob Lavinsky & irocks.com