Know all about Chalk and Blueschist properties here. All properties of rocks are important as they define the type of rock and its application. Chalk belongs to Sedimentary Rocks while Blueschist belongs to Metamorphic Rocks.Texture of Chalk is Clastic or Non-Clastic whereas that of Blueschist is Foliated. Chalk appears Soft and Blueschist appears Dull and Banded. The luster of Chalk and Blueschist is dull. Chalk is available in grey, white, yellow colors whereas Blueschist is available in blue, bluish - grey, purple, shades of blue 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 Blueschist are cemetery markers, commemorative tablets, creating artwork, curling, tombstones.