Know all about Quartzite and Trondhjemite properties here. All properties of rocks are important as they define the type of rock and its application. Quartzite belongs to Metamorphic Rocks while Trondhjemite belongs to Igneous Rocks.Texture of Quartzite is Foliated, Granular whereas that of Trondhjemite is Phaneritic. Quartzite appears Lustrous and Trondhjemite appears Banded and Foilated. The luster of Quartzite is vitreous while that of Trondhjemite is subvitreous to dull. Quartzite is available in black, blue, brown, green, light grey, purple, white, yellow colors whereas Trondhjemite is available in black, brown, light to dark grey, white colors. The commercial uses 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 and that of Trondhjemite are cemetery markers, creating artwork.