Know all about Diatomite and Lignite properties here. All properties of rocks are important as they define the type of rock and its application. Diatomite and Lignite belong to Sedimentary Rocks.Texture of Diatomite is Clastic or Non-Clastic whereas that of Lignite is Amorphous, Glassy. Diatomite appears Soft and Lignite appears Veined or Pebbled. The luster of Diatomite is dull while that of Lignite is dull to vitreous to submetallic. Diatomite is available in grey, white, yellow colors whereas Lignite is available in black, brown, dark brown, grey, light to dark 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 Lignite are electricity generation.