what is sandstone rock
Sandstone is a sedimentary rock composed of sand-sized grains of mineral, rock or organic material. It also contains a cementing material that binds the sand grains together and may contain a matrix of silt-or clay-size particles that occupy the spaces between the sand grains.he grains of sand in a sandstone are usually particles of mineral, rock or organic material that have been reduced to sand size by weathering and transported to their depositional site by the action of moving water, wind or ice.