2.2" Rosasite and Selenite on Ferroan Dolomite - Morocco

Rosasite and Selenite on Ferroan Dolomite - Morocco #256532

This colorful specimen contains blue-green colored rosasite crystals on a bed of dark purplish ferroan dolomite. Small clusters of transparent selenite and deeper green fibrous malachite can also be found atop the dolomite.

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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