Know all about Soapstone and Pseudotachylite properties here. All properties of rocks are important as they define the type of rock and its application. Soapstone and Pseudotachylite belong to Metamorphic Rocks.Texture of Soapstone is Polished whereas that of Pseudotachylite is Quench. Soapstone appears Dull, Banded and Foilated and Pseudotachylite appears Dull and Soft. The luster of Soapstone is greasy while that of Pseudotachylite is vitreous. Soapstone is available in black, black to grey, green, grey colors whereas Pseudotachylite is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Soapstone and Pseudotachylite are cemetery markers, creating artwork, gemstone, jewelry, manufacture of soap, solvents, dyes, plastics and fibres, production of lime, source of magnesia (mgo).