Know all about Itacolumite and Dacite properties here. All properties of rocks are important as they define the type of rock and its application. Itacolumite belongs to Sedimentary Rocks while Dacite belongs to Igneous Rocks.Texture of Itacolumite is Clastic, Granular, Rough whereas that of Dacite is Aphanitic to Porphyritic. Itacolumite appears Rough and Dacite appears Vesicular. The luster of Itacolumite is dull while that of Dacite is subvitreous to dull. 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 Dacite is available in bluish - grey, brown, grey, light to dark grey 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 Dacite are commemorative tablets, creating artwork.