Talc
The Softest of Minerals

Talc is a metamorphic mineral from the silicate family. Its chemical formula is hydrated magnesium silicate H2Mg3(SiO3)4. Talc is commonly used as talcum powder to reduce friction, promote dry skin, and prevent rashes. It is very soft a 1 on the Moh’s harness scale. The color can be white, gray, or green and it has a white streak. In rare instances it can have a crystalline form but is commonly found in fibrous masses.
Talc is a metamorphic mineral from the silicate family.