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