Know all about Diatomite and Appinite properties here. All properties of rocks are important as they define the type of rock and its application. Diatomite belongs to Sedimentary Rocks while Appinite belongs to Igneous Rocks.Texture of Diatomite is Clastic or Non-Clastic whereas that of Appinite is Porphyritic. Diatomite appears Soft and Appinite appears Dull, Banded and Foilated. The luster of Diatomite is dull while that of Appinite is subvitreous to dull. Diatomite is available in grey, white, yellow colors whereas Appinite is available in black, bluish - grey, brown, dark greenish - grey, green, 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 Appinite are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner.