<Tr> <Th_colspan="2"> Composition </Th> </Tr> <Tr> <Td_colspan="2"> Typically quartz and feldspar; lithic fragments are also common . Other minerals may be found in particularly mature sandstone . </Td> </Tr> <P> Sandstone is a clastic sedimentary rock composed mainly of sand - sized (0.0625 to 2 mm) mineral particles or rock fragments . </P> <P> Most sandstone is composed of quartz or feldspar (both silicates) because they are the most resistant minerals to weathering processes at the Earth's surface, as seen in Bowen's reaction series . Like uncemented sand, sandstone may be any color due to impurities within the minerals, but the most common colors are tan, brown, yellow, red, grey, pink, white, and black . Since sandstone beds often form highly visible cliffs and other topographic features, certain colors of sandstone have been strongly identified with certain regions . </P>

Name the different types of rock with example