Feldspar. KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8

The name of "Feldspar" refers to group of Aluminium Silicate of Potassium, Sodium and Calcium. Soda and Potash Feldspars are differentiated by the ratio of Potassium and Sodium in them.

RMCL's Feldspars are generally light-coloured, including Snow White, Pink, Tan, Green, or Gray. The colour varies due to impurities within the crystal structure. Feldspar is the mineral that gives granite its Pink, Green or Gray colour.

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