3.3" Azurite, Aurichalcite and Rosasite Association - Utah

Azurite, Aurichalcite and Rosasite Association - Utah #119520

This colorful specimen contains deep blue azurite crystals that formed in association with botryoidal blue-green rosasite and fibrous aurichalcite crystals that branch outward from the rosasite formations. It was collected from the Hidden Treasure Mine in the Ophir District of Utah, a location that's well known for its zinc and copper mineral deposits.

It 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.

Aurichalcite is a secondary mineral that forms in the oxidation zones of copper and zinc ore deposits. It has the chemical formula (Zn,Cu)5(CO3)2(OH)6 and often forms as radiating acicular blue-green crystals and linings along cavity walls.

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.

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