2" Rosasite, Gypsum, and Malachite on Ferroan Dolomite - Morocco

Rosasite, Gypsum, and Malachite on Ferroan Dolomite - Morocco #256539

This colorful specimen contains small clusters of bright blue-green rosasite interspersed with transparent gypsum and deeper green fibrous malachite on a bed of dark purplish ferroan 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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