Know all about Itacolumite and Rhyolite properties here. All properties of rocks are important as they define the type of rock and its application. Itacolumite belongs to Sedimentary Rocks while Rhyolite belongs to Igneous Rocks.Texture of Itacolumite is Clastic, Granular, Rough whereas that of Rhyolite is Aphanitic, Glassy, Porphyritic. Itacolumite appears Rough and Rhyolite appears Banded. The luster of Itacolumite is dull while that of Rhyolite is earthy. Itacolumite is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors whereas Rhyolite is available in grey, white, light black colors. The commercial uses of Itacolumite are an oil and gas reservoir, in aquifers, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones and that of Rhyolite are gemstone, laboratory bench tops, jewelry.