Chalcophyllite

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I would never have imagined this copper species from this gem mining district but here we have a rather specific locality given, too! This specimen of drusy crystallized chalcophyllite is a rarity: the only one I have handled from Brazil. Although the crystals are small it is overall a pretty, sparkling specimen with lots of color coverag. After consulting a few others, I could not find any specimens of this material elsewhere for comparison. However, I have no doubt it is legitimate. It is simply too strange to make up and every now and then, we do get some copper mineralization in Brazil turn up - though it is rare.