Sylvite
ID: sylvite
KCl
Description
Sylvite, chemically identified as potassium chloride (KCl), serves as a readily soluble mineral source of potassium oxide (K2O) for ceramic applications. Crystallizing within the isometric system, it exhibits structural isomorphism with halite. Physically, the mineral presents as colorless or white, though it may appear tinted yellow or red depending on the nature of its internal inclusions. It possesses a Mohs hardness of 2.5, a specific gravity of 1.99, and a refractive index of 1.4903. In its natural state, it is characterized by a saline, noticeably bitter taste.