Know all about Troctolite and Quartzite properties here. All properties of rocks are important as they define the type of rock and its application. Troctolite belongs to Igneous Rocks while Quartzite belongs to Metamorphic Rocks.Texture of Troctolite is Phaneritic whereas that of Quartzite is Foliated, Granular. Troctolite appears Veined and Shiny and Quartzite appears Lustrous. The luster of Troctolite is not available while that of Quartzite is vitreous. Troctolite is available in dark grey to black colors whereas Quartzite is available in black, blue, brown, green, light grey, purple, white, yellow colors. The commercial uses of Troctolite are cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones 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.