Know all about Nephelinite and Mudstone properties here. All properties of rocks are important as they define the type of rock and its application. Nephelinite belongs to Igneous Rocks while Mudstone belongs to Sedimentary Rocks.Texture of Nephelinite is Aphanitic whereas that of Mudstone is Clastic. Nephelinite appears Skeletal and Mudstone appears Rough and Dull. The luster of Nephelinite is vitreous to metallic while that of Mudstone is dull. Nephelinite is available in black, brown, colourless, green, grey, white colors whereas Mudstone is available in black, blue, brown, green, grey, orange, red, white, yellow colors. The commercial uses of Nephelinite are creating artwork, soil conditioner, source of magnesia (mgo) and that of Mudstone are creating artwork, pottery.