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