Know all about Chalk and Websterite properties here. All properties of rocks are important as they define the type of rock and its application. Chalk belongs to Sedimentary Rocks while Websterite belongs to Igneous Rocks.Texture of Chalk is Clastic or Non-Clastic whereas that of Websterite is Clastic, Granular, Phaneritic, Porphyritic. Chalk appears Soft and Websterite appears Layered, Banded, Veined and Shiny. The luster of Chalk is dull while that of Websterite is dull to vitreous to submetallic. Chalk is available in grey, white, yellow colors whereas Websterite is available in black to grey, bluish - grey, dark greenish - grey, green, light greenish grey 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 Websterite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones.