Sandstone is a sedimentary rock composed of sand-size 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.
Sandstone is one of the most common types of sedimentary rock and is found in sedimentary basins throughout the world. It is often mined for use as a construction material or as a raw material used in manufacturing. In the subsurface, sandstone often serves as an aquifer for groundwater or as a reservoir for oil and natural gas.
trace minerals in the rock, sometimes diffused for solid color, sometimes deposited in bands, swirls or spots.