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