human
I'm trying to find out about different types of sandstone.
assistant
Sandstone is a sedimentary rock composed of sand-sized mineral particles that are cemented together by silica and other materials. It can be classified into several categories, such as quartz arenite, quartzite, chert, limestone, shale, and siltstone. Quartz arenite is a type of sandstone that contains large amounts of quartz grains and has a grain size between 0.0625 mm and 2 mm. Quartzite is a type of sandstone with a higher content of quartz and is usually harder than quartz arenite. Chert is a type of sandstone that is composed mainly of chert minerals. Limestone is a carbonate sedimentary rock composed of calcite or aragonite minerals. Shale is a type of sedimentary rock that is composed of clay-sized mineral particles. Siltstone is a type of sedimentary rock made up of silt-sized mineral particles.