What is "ajoite"

n. (context mineral English) A turquoise mineral with triclinic crystals, (potassium,sodium)copper₇²⁺aluminumsilicon₉oxygen₂₄(Ohydrogen)₆'''·'''3water.

Ajoite is a hydrated sodium potassium copper aluminium silicate hydroxide mineral. Ajoite has the chemical formula (Na,K)CuAlSiO(OH)·3(HO), and minor Mn, Fe and Ca are usually also present in the structure. Ajoite is used as a minor ore of copper.