Limestone & Sandstone - Types and properties
Types and properties of limestone and sandstone
Sandstone is a sedimentary rock composed mostly of quartz sand, but it can also contain significant amounts of feldspar, and sometimes silt and clay.
Sandstone that contains more than 90% quartz is called quartz sandstone.
Limestone is a sedimentary rock composed principally of calcium carbonate (calcite) or the double carbonate of calcium and magnesium (dolomite). It is commonly composed of tiny fossils, shell fragments and other fossilised debris.