coalscere
Coalscare is a rare hydrous mineral that belongs to the zeolite group of minerals. It has a chemical composition of (Si,Al,K)12O24-12(H2O), with potassium and silicon-aluminum being the primary cations. This mineral is known for its distinctive coal-like appearance.
Coalscare typically forms through the alteration of potassium-rich rocks in a low-temperature environment. The process often
The occurrences of coalscare have been found in masses of other silicate minerals. The able gem and