Know all about Diatomite and Trachyte properties here. All properties of rocks are important as they define the type of rock and its application. Diatomite belongs to Sedimentary Rocks while Trachyte belongs to Igneous Rocks.Texture of Diatomite is Clastic or Non-Clastic whereas that of Trachyte is Aphanitic to Porphyritic. Diatomite appears Soft and Trachyte appears Banded. The luster of Diatomite is dull while that of Trachyte is metallic. Diatomite is available in grey, white, yellow colors whereas Trachyte is available in black, brown, dark greenish - grey, green, grey, light to dark grey, white colors. The commercial uses of Diatomite are alumina refineries, animal feed filler, as a feed additive for livestock, creating artwork, drawing on blackboards, fire resistant, gymnasts, athletes and mountain climbers use for grip, in aquifers, soil conditioner, to ignite fire, used as a filter medium, used as an insecticide, whiting material in toothpaste, paint and paper and that of Trachyte are cemetery markers, creating artwork.