5.9" Rosasite, Selenite and Ferroan Dolomite Association - Morocco

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.

Comes with an acrylic display stand.

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.

Selenite is a variety of gypsum, a soft sulfate mineral that is composed of calcium sulfate dihydrate (CaSO4 · H2O). When chemically pure, gypsum is transparent and colorless, however, impurities give the gypsum a diverse range of colors and formations. Desert rose, selenite and satin spar are just a few of the varieties of gypsum known to have formed though hydrothermal processes.
Rosasite, Selenite & Dolomite
Bou Bekker, Touissit, Morocco
5.9 x 2.7"