Know all about Troctolite and Nephelinite properties here. All properties of rocks are important as they define the type of rock and its application. Troctolite and Nephelinite belong to Igneous Rocks.Texture of Troctolite is Phaneritic whereas that of Nephelinite is Aphanitic. Troctolite appears Veined and Shiny and Nephelinite appears Skeletal. The luster of Troctolite is not available while that of Nephelinite is vitreous to metallic. Troctolite is available in dark grey to black colors whereas Nephelinite is available in black, brown, colourless, green, grey, white colors. The commercial uses of Troctolite are cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones and that of Nephelinite are creating artwork, soil conditioner, source of magnesia (mgo).