Know all about Ganister and Rhyodacite properties here. All properties of rocks are important as they define the type of rock and its application. Ganister belongs to Sedimentary Rocks while Rhyodacite belongs to Igneous Rocks.Texture of Ganister is Clastic, Granular, Rough whereas that of Rhyodacite is Earthy. Ganister appears Rough and Rhyodacite appears Skeletal. The luster of Ganister is dull while that of Rhyodacite is greasy to dull. Ganister is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors whereas Rhyodacite is available in black to grey, dark greenish - grey colors. The commercial uses of Ganister are an oil and gas reservoir, in aquifers, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones and that of Rhyodacite are cemetery markers, creating artwork.