Know all about Rhyodacite and Soapstone properties here. All properties of rocks are important as they define the type of rock and its application. Rhyodacite belongs to Igneous Rocks while Soapstone belongs to Metamorphic Rocks.Texture of Rhyodacite is Earthy whereas that of Soapstone is Polished. Rhyodacite appears Skeletal and Soapstone appears Dull, Banded and Foilated. The luster of Rhyodacite is greasy to dull while that of Soapstone is greasy. Rhyodacite is available in black to grey, dark greenish - grey colors whereas Soapstone is available in black, black to grey, green, grey colors. The commercial uses of Rhyodacite are cemetery markers, creating artwork and that of Soapstone are cemetery markers, creating artwork, gemstone, jewelry, manufacture of soap, solvents, dyes, plastics and fibres, production of lime, source of magnesia (mgo).