Sandstone

 

Sandstone is a classic sedimentary rock comprised of sand sized fragments of minerals, rocks or fossils held together by mineral cement. Sandstone forms when sand is buried under successive layers of sediment. The sand is then compacted and a binding agent such as quartz or iron oxide is precipitated from ground water which moves through passageways grains to create sandstone. Like sand, sandstone may vary colour, most common colours are brown, yellow red and grey. Sandstone can be used for both interior and exterior use. It is mainly used as a building material and looks best with a natural honed or sanded surface finish.