Talc Powder

Soapstone (also known as steatite, or soaprock) is a talc-schist., which is a type of metamorphic rock. It is largely composed of the mineral talc and is thus rich in magnesium.
It is widely used in Paint, Plastic and Fabrication Industries. Welders and fabricators use soapstone as a marker due to its resistance to heat; it remains visible when heat is applied. It has also been used for many years by seamstresses, carpenters, and other craftsmen as a marking tool because its marks are visible and not permanent, it can be used to create molds for casting objects from soft metals, such as pewter or silver. The soft stone is easily carved and is not degraded by heating. The slick surface of soapstone allows the finished object to be easily removed.