Know all about Diatomite and Comendite properties here. All properties of rocks are important as they define the type of rock and its application. Diatomite belongs to Sedimentary Rocks while Comendite belongs to Igneous Rocks.Texture of Diatomite is Clastic or Non-Clastic whereas that of Comendite is Porphyritic. Diatomite appears Soft and Comendite appears Foliated. The luster of Diatomite and Comendite is dull. Diatomite is available in grey, white, yellow colors whereas Comendite is available in blue, bluish - grey 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 Comendite are cemetery markers.