2.2" Botryoidal Rosasite and Azurite Crystals - Hidden Treasure Mine

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.

Azurite is a copper carbonate hydroxide mineral that is best known for it's beautiful and vibrant blue appearance, Azurite typically forms in nodular formations with other colorful, copper rich minerals. Azurite is a secondary mineral that forms in pores, crevices, and caverns as water with high concentrations of carbon-dioxide precipitate.

Azurite and malachite are known to form in union with each other, for their chemical makeup is very similar. In fact, the presence of more or less water in the location of formation, is enough to determine whether an abundance of malachite over azurite, or vise-versa, will accumulate.