1.8" Vibrant Blue, Cyanotrichite and Azurite Association - China

Cyanotrichite is a hydrous copper aluminum sulfate with the chemical formula Cu4Al2SO4(OH)12 · 2H2O. It is a secondary mineral in copper oxidation zones and is primarily found as spherical aggregates of blue, radiating acicular crystals. Due to the fragility of cyanotrichite crystals, we suggest that specimens be placed in a safe location and handled carefully.

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

Azurite and malachite are known to form in union with each other since 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.