Know all about Itacolumite and Trondhjemite properties here. All properties of rocks are important as they define the type of rock and its application. Itacolumite belongs to Sedimentary Rocks while Trondhjemite belongs to Igneous Rocks.Texture of Itacolumite is Clastic, Granular, Rough whereas that of Trondhjemite is Phaneritic. Itacolumite appears Rough and Trondhjemite appears Banded and Foilated. The luster of Itacolumite is dull while that of Trondhjemite is subvitreous to dull. Itacolumite and Trondhjemite 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 Trondhjemite are cemetery markers, creating artwork.