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