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