2.4" Rosasite & Selenite On Ferroan Dolomite - Morocco

Rosasite & Selenite On Ferroan Dolomite - Morocco #256360

This colorful specimen contains blue-green colored rosasite crystals on a bed of dark reddish brown ferroan dolomite. Small translucent selenite crystals can be found atop the dolomite as well as enshrouding the rosasite crystal formations. Some enshrouded sphalerite can be found on the edges of the specimen.

Rosasite is a secondary mineral that forms in oxidation zones of copper-zinc deposits, generally forming a fibrous botryoidal sphere that can appear vitreous and silky. While typically featuring a blue-green color, colorless specimens are not unheard of. The chemical formula of rosasite is CuZnCO3(OH)2.

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