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Anthorite can be found in lunar & cometary rocks, but Sphalerite gets my vote with cool optical/electrical properties & its role in art history as main zinc ore. Zn has been used in brass & bronze for centuries. Since the 18th century it was used to make ZnO pigments & etching, plates. 🧵1/2 #MinCup26 #scicomm #artHistory #minerals