Know all about Phyllite and Quartzite properties here. All properties of rocks are important as they define the type of rock and its application. Phyllite and Quartzite belong to Metamorphic Rocks.Texture of Phyllite is Phyllitic Sheen, Slaty whereas that of Quartzite is Foliated, Granular. Phyllite appears Crinkled or Wavy and Quartzite appears Lustrous. The luster of Phyllite is phyllitic while that of Quartzite is vitreous. Phyllite is available in black to grey, light greenish grey colors whereas Quartzite is available in black, blue, brown, green, light grey, purple, white, yellow colors. The commercial uses of Phyllite are cemetery markers, commemorative tablets, creating artwork, writing slates and that of Quartzite are an oil and gas reservoir, as armour rock for sea walls, cemetery markers, commemorative tablets, in aquifers, laboratory bench tops, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones, used in aquariums.