Know all about Lignite and Quartzite properties here. All properties of rocks are important as they define the type of rock and its application. Lignite belongs to Sedimentary Rocks while Quartzite belongs to Metamorphic Rocks.Texture of Lignite is Amorphous, Glassy whereas that of Quartzite is Foliated, Granular. Lignite appears Veined or Pebbled and Quartzite appears Lustrous. The luster of Lignite is dull to vitreous to submetallic while that of Quartzite is vitreous. Lignite is available in black, brown, dark brown, grey, light to dark grey colors whereas Quartzite is available in black, blue, brown, green, light grey, purple, white, yellow colors. The commercial uses of Lignite are electricity generation 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.