Talc is a clay mineral composed of hydrated magnesium silicate. In loose form, it is the widely used substance known as baby powder, also known as talcum powder (Talc). read more
As nouns the difference between talc and soapstone is that talc is a soft mineral, composed of hydrated magnesium silicate, that has a soapy feel and a greenish, whitish, or grayish color, and usually occurs in foliated masses while soapstone is (geology) a soft rock, rich in talc, also containing serpentine and either magnetite, dolomite or calcite. read more
Geology: Soapstone is a natural rock found in several places around the world. It was formed from igneous rock in ancient ocean rift zones when those areas experienced significant heat and pressure from mountain formation and tectonic movement. The talc mineral in soapstone gives it that soft, smooth feel. read more