Talc is also known as magnesium silicate hydrate, steatite, or soapstone.
Pioneer 2882 is a white-burning, high-organic, Texas talc that is low in calcium.
It is a very active flux in mid-range and high-fire clays and glazes.
Talc is an insoluble mineral.
It is used as a matting agent in earthenware glazes, and at high temperatures can produce magnesia mattes.