Rock texturesRocks have many various textures. Layered sandstone makes a gritty texture, While coquina can be rough with cemented shells often generating a pointy edge. Likewise, breccia, which is made up of pieces of other rocks which were cemented jointly, and porphyry, which contains interlocking mineral crystals, are typically tough. https://rock-sticks02344.blogcudinti.com/36532287/not-known-facts-about-sticks-of-rock