Know all about Nephelinite and Trachyandesite properties here. All properties of rocks are important as they define the type of rock and its application. Nephelinite and Trachyandesite belong to Igneous Rocks.Texture of Nephelinite is Aphanitic whereas that of Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Nephelinite appears Skeletal and Trachyandesite appears Dull and Soft. The luster of Nephelinite is vitreous to metallic while that of Trachyandesite is earthy. Nephelinite is available in black, brown, colourless, green, grey, white colors whereas Trachyandesite is available in black, brown, light to dark grey colors. The commercial uses of Nephelinite are creating artwork, soil conditioner, source of magnesia (mgo) and that of Trachyandesite are creating artwork, pottery.