Rosasite on Smithsonite

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Silver Bill mine at Gleeson, in Turquoise District, Cochise Co., Arizona has produced some of the finest crystallized Rosasite in the US, but also in the world. This superb miniature-sized specimen comes specifically from the 'Copper Stope' at Silver Bill mine and shows a lovely combination of blue-green crystallized Rosasite surrounded by white Smithsonite in this carbonate-dominated assemblage. The Rosasite forms finely crystallized velvety coatings and small sprays, with one spherical aggregate towards one edge of the sample showing a brown core with Rosasite coating the surface. A really rich example of this usually unusual zinc-copper species.