This Specimen has been sold.
3.7" Rosasite and Ferroan Dolomite Association - Morocco
This colorful specimen contains blue-green colored rosasite crystals on a bed of reddish brown 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.