Rock texturesRocks have numerous textures. Layered sandstone produces a gritty texture, whereas coquina could possibly be tough with cemented shells occasionally generating a pointy edge. Likewise, breccia, which includes items of other rocks which were cemented alongside one another, and porphyry, which consists of interlocking mineral crystals, are usually rough. https://rock-sticks34566.bloguetechno.com/sticks-of-rock-no-further-a-mystery-71497702