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Brochantite

Brochantite is a sulfate mineral, one of a number of cupric sulfates. Its chemical formula is Cu4SO4(OH)6. Formed in arid climates or in rapidly oxidizing copper sulfide deposits, it was named by Armand Lévy for his fellow Frenchman, geologist and mineralogist A. J. M. Brochant de Villiers.

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File:Brochantite-md75b.jpg|These long slender crystals, from Bisbee, Arizona, have the highly desirable emerald green color and good luster that is sought after in brochantite by collectors. Detail of thumbnail specimen, size 2.3 × 2 × .8 cm. File:Brochantite-Chrysocolla-k329b.jpg| Brochantite on chrysocolla. Locality: Rokana Mine, Kitwe, Copperbelt Province, Zambia. Detail of larger specimen, field of view about 3 × 5 cm. File:Brochantite-Linarite-20434.jpg|Brochantite on linarite. Locality: Mujuram, Morocco. Size 8 × 8 cm. ==References==
Source: Wikipedia ↗
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