Know all about Mylonite and Itacolumite properties here. All properties of rocks are important as they define the type of rock and its application. Mylonite belongs to Metamorphic Rocks while Itacolumite belongs to Sedimentary Rocks.Texture of Mylonite is Foliated whereas that of Itacolumite is Clastic, Granular, Rough. Mylonite appears Dull, Banded and Foilated and Itacolumite appears Rough. The luster of Mylonite is shiny while that of Itacolumite is dull. Mylonite is available in black to grey colors whereas Itacolumite is 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 Mylonite are creating artwork, gemstone, jewelry and that of Itacolumite are an oil and gas reservoir, in aquifers, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones.