Know all about Essexite and Chalk properties here. All properties of rocks are important as they define the type of rock and its application. Essexite belongs to Igneous Rocks while Chalk belongs to Sedimentary Rocks.Texture of Essexite is Granular whereas that of Chalk is Clastic or Non-Clastic. Essexite appears Banded and Chalk appears Soft. The luster of Essexite is not available while that of Chalk is dull. Essexite is available in dark grey to black colors whereas Chalk is available in grey, white, yellow colors. The commercial uses of Essexite are cemetery markers, commemorative tablets, jewelry, sea defence, tombstones 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.