Preface:

Sericite is a common alteration mineral of orthoclase or plagioclase feldspars in areas that have been subjected to hydrothermal alteration typically associated with copper, tin, or other hydrothermal ore deposits. Sericite also occurs as the fine mica and found with associated minerals like Feldspar & Quartz that gives the sheen to phyllite and schistose metamorphic rocks.

Sericite is widely used as a colorant in lipsticks, eye shadows, hair dyes and colours, face powders, blushers, eye liners, dusting and talcum powders, foundations, nail lacquers, mascara, makeup bases, etc. Cosmetic Sericite is a natural material belonging to the mica group.