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