Know all about Nephelinite and Rhyodacite properties here. All properties of rocks are important as they define the type of rock and its application. Nephelinite and Rhyodacite belong to Igneous Rocks.Texture of Nephelinite is Aphanitic whereas that of Rhyodacite is Earthy. Nephelinite appears Skeletal and Rhyodacite appears Skeletal. The luster of Nephelinite is vitreous to metallic while that of Rhyodacite is greasy to dull. Nephelinite is available in black, brown, colourless, green, grey, white colors whereas Rhyodacite is available in black to grey, dark greenish - grey colors. The commercial uses of Nephelinite are creating artwork, soil conditioner, source of magnesia (mgo) and that of Rhyodacite are cemetery markers, creating artwork.