Know all about Diatomite and Hornblendite properties here. All properties of rocks are important as they define the type of rock and its application. Diatomite belongs to Sedimentary Rocks while Hornblendite belongs to Igneous Rocks.Texture of Diatomite is Clastic or Non-Clastic whereas that of Hornblendite is Banded, Foliated, Massive. Diatomite appears Soft and Hornblendite appears Foliated. The luster of Diatomite is dull while that of Hornblendite is vitreous to dull. Diatomite is available in grey, white, yellow colors whereas Hornblendite is available in black, brown, 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 Hornblendite are cemetery markers, commemorative tablets, creating artwork.