The Softest of Minerals
is a metamorphic mineral from the silicate family. Its chemical formula is hydrated magnesium silicate H2
. 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.