Talc Cimtalc

Talc: (3Mg0 4Si0₂ H₂0) used in glazes to provide magnesium silica which can act as a flux in conjunction with other oxides. In clay body formulas, it can increase thermal shock properties. The higher the number, the finer the talc.

 This talc is now white, not gray. It is Cimtalc brand