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