Know all about Itacolumite and Nephelinite properties here. All properties of rocks are important as they define the type of rock and its application. Itacolumite belongs to Sedimentary Rocks while Nephelinite belongs to Igneous Rocks.Texture of Itacolumite is Clastic, Granular, Rough whereas that of Nephelinite is Aphanitic. Itacolumite appears Rough and Nephelinite appears Skeletal. The luster of Itacolumite is dull while that of Nephelinite is vitreous to metallic. Itacolumite and Nephelinite are available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow 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 Nephelinite are creating artwork, soil conditioner, source of magnesia (mgo).