Know all about Itacolumite and Picrite properties here. All properties of rocks are important as they define the type of rock and its application. Itacolumite belongs to Sedimentary Rocks while Picrite belongs to Igneous Rocks.Texture of Itacolumite is Clastic, Granular, Rough whereas that of Picrite is Earthy, Rough. Itacolumite appears Rough and Picrite appears Rough and Shiny. The luster of Itacolumite is dull while that of Picrite is subvitreous to dull. Itacolumite and Picrite 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 Picrite are as a feed additive for livestock, as armour rock for sea walls, metallurgical flux, pottery, source of magnesia (mgo).