Know all about Appinite and Chalk properties here. All properties of rocks are important as they define the type of rock and its application. Appinite belongs to Igneous Rocks while Chalk belongs to Sedimentary Rocks.Texture of Appinite is Porphyritic whereas that of Chalk is Clastic or Non-Clastic. Appinite appears Dull, Banded and Foilated and Chalk appears Soft. The luster of Appinite is subvitreous to dull while that of Chalk is dull. Appinite is available in black, bluish - grey, brown, dark greenish - grey, green, grey colors whereas Chalk is available in grey, white, yellow colors. The commercial uses of Appinite are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner and that of Chalk are alumina refineries, creating artwork, drawing on blackboards, gymnasts, athletes and mountain climbers use for grip, in aquifers, paper industry, production of lime, raw material for manufacture of quicklime, slaked lime, soil conditioner, whiting, whiting material in toothpaste, paint and paper.