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