Know all about Itacolumite and Porphyry properties here. All properties of rocks are important as they define the type of rock and its application. Itacolumite belongs to Sedimentary Rocks while Porphyry belongs to Igneous Rocks.Texture of Itacolumite is Clastic, Granular, Rough whereas that of Porphyry is Porphyritic. Itacolumite appears Rough and Porphyry appears Dull. The luster of Itacolumite and Porphyry is dull. 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 Porphyry is available in black, brown, colourless, green, grey, red, rust, white 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 Porphyry are creating artwork, gemstone, jewelry.