Know all about Phyllite and Chalk properties here. All properties of rocks are important as they define the type of rock and its application. Phyllite belongs to Metamorphic Rocks while Chalk belongs to Sedimentary Rocks.Texture of Phyllite is Phyllitic Sheen, Slaty whereas that of Chalk is Clastic or Non-Clastic. Phyllite appears Crinkled or Wavy and Chalk appears Soft. The luster of Phyllite is phyllitic while that of Chalk is dull. Phyllite is available in black to grey, light greenish grey colors whereas Chalk is available in grey, white, yellow colors. The commercial uses of Phyllite are cemetery markers, commemorative tablets, creating artwork, writing slates 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.