Know all about Quartzite and Comendite properties here. All properties of rocks are important as they define the type of rock and its application. Quartzite belongs to Metamorphic Rocks while Comendite belongs to Igneous Rocks.Texture of Quartzite is Foliated, Granular whereas that of Comendite is Porphyritic. Quartzite appears Lustrous and Comendite appears Foliated. The luster of Quartzite is vitreous while that of Comendite is dull. Quartzite is available in black, blue, brown, green, light grey, purple, white, yellow colors whereas Comendite is available in blue, bluish - grey colors. The commercial uses of Quartzite and Comendite 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.