Know all about Diatomite and Argillite properties here. All properties of rocks are important as they define the type of rock and its application. Diatomite and Argillite belong to Sedimentary Rocks.Texture of Diatomite is Clastic or Non-Clastic whereas that of Argillite is Clastic, Polished. Diatomite appears Soft and Argillite appears Rough and Dull. The luster of Diatomite is dull while that of Argillite is waxy and dull. Diatomite is available in grey, white, yellow colors whereas Argillite is available in dark grey to black, pink, red, 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 Argillite are fire resistant, used to manufracture paperweights and bookends.