Know all about Chalk and Wehrlite properties here. All properties of rocks are important as they define the type of rock and its application. Chalk belongs to Sedimentary Rocks while Wehrlite belongs to Igneous Rocks.Texture of Chalk is Clastic or Non-Clastic whereas that of Wehrlite is Banded. Chalk appears Soft and Wehrlite appears Rough and Banded. The luster of Chalk is dull while that of Wehrlite is metallic. Chalk is available in grey, white, yellow colors whereas Wehrlite is available in dark greenish - grey, green 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 Wehrlite are cemetery markers, creating artwork, gemstone, jewelry.