Know all about Itacolumite and Shonkinite properties here. All properties of rocks are important as they define the type of rock and its application. Itacolumite belongs to Sedimentary Rocks while Shonkinite belongs to Igneous Rocks.Texture of Itacolumite is Clastic, Granular, Rough whereas that of Shonkinite is Earthy. Itacolumite appears Rough and Shonkinite appears Banded and Foilated. The luster of Itacolumite is dull while that of Shonkinite is subvitreous to 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 Shonkinite is available in brown, buff, cream, green, grey, pink, 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 Shonkinite are cemetery markers, creating artwork.