Know all about Marl and Diatomite properties here. All properties of rocks are important as they define the type of rock and its application. Marl and Diatomite belong to Sedimentary Rocks.Texture of Marl is Earthy whereas that of Diatomite is Clastic or Non-Clastic. Marl appears Rough and Dull and Diatomite appears Soft. The luster of Marl and Diatomite is dull. Marl is available in beige, brown, green, grey, white colors whereas Diatomite is available in grey, white, yellow colors. The commercial uses of Marl are creating artwork, soil conditioner and that 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.