Know all about Itacolumite and Greenschist properties here. All properties of rocks are important as they define the type of rock and its application. Itacolumite belongs to Sedimentary Rocks while Greenschist belongs to Metamorphic Rocks.Texture of Itacolumite is Clastic, Granular, Rough whereas that of Greenschist is Foliated, Platy. Itacolumite appears Rough and Greenschist appears Layered and Shiny. The luster of Itacolumite is dull while that of Greenschist is shiny. 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 Greenschist is available in dark greenish - grey, green 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 Greenschist are blackboards, manufacture of tools, writing slates.