Characteristics related to grain size of rocks are called as texture. Here you can know more about texture of Nephelinite and Argillite. Texture of Nephelinite is Aphanitic whereas that of Argillite is Clastic, Polished. Based on the texture of rocks, they are used for various purposes. Get detailed information about Nephelinite vs Argillite texture, color, appearance and maintenance in the next section.