Know all about Foidolite and Diatomite properties here. All properties of rocks are important as they define the type of rock and its application. Foidolite belongs to Igneous Rocks while Diatomite belongs to Sedimentary Rocks.Texture of Foidolite is Earthy whereas that of Diatomite is Clastic or Non-Clastic. Foidolite appears Dull and Diatomite appears Soft. The luster of Foidolite is subvitreous to dull while that of Diatomite is dull. Foidolite is available in black, brown, colourless, green, grey, pink, white colors whereas Diatomite is available in grey, white, yellow colors. The commercial uses of Foidolite are cemetery markers, commemorative tablets, creating artwork 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.