Know all about Hornblendite and Itacolumite properties here. All properties of rocks are important as they define the type of rock and its application. Hornblendite belongs to Igneous Rocks while Itacolumite belongs to Sedimentary Rocks.Texture of Hornblendite is Banded, Foliated, Massive whereas that of Itacolumite is Clastic, Granular, Rough. Hornblendite appears Foliated and Itacolumite appears Rough. The luster of Hornblendite is vitreous to dull while that of Itacolumite is dull. Hornblendite is available in black, brown, green, 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 Hornblendite are cemetery markers, commemorative tablets, creating artwork and that of Itacolumite are an oil and gas reservoir, in aquifers, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones.