Know all about Itacolumite and Siltstone properties here. All properties of rocks are important as they define the type of rock and its application. Itacolumite and Siltstone belong to Sedimentary Rocks.Texture of Itacolumite is Clastic, Granular, Rough whereas that of Siltstone is Clastic. Itacolumite appears Rough and Siltstone appears Rough. The luster of Itacolumite and Siltstone 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 Siltstone is available in brown, red, reddish brown 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 Siltstone are raw material for the manufacture of mortar, soil conditioner.