Classified by rock (mineral) types: quartz sandstone (quartz and siliceous debris account for more than 95% of the total sandstone debris) and quartz complex sandstone, feldspar sandstone (mainly quartz and feldspar, with quartz content less than 75%, feldspar over 18.75%) and feldspar complex sandstone, lithic sandstone (detrital middle rock) The content of quartz is less than 75%, the content of lithic debris is generally greater than 18.755, the ratio of lithic debris to feldspar is greater than 3) and lithic complex sandstone.
According to the diameter of sand grains, it can be divided into: giant grained sandstone (2-1 mm), coarse grained sandstone (1-0.5 mm), medium grained sandstone (0.5-0.25 mm), fine grained sandstone (0.25-0.125 mm) and fine grained sandstone (0.125-0.0625 mm).