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