has part clay sand sandy clay 2021-12-26T22:13:44Z Clay which has a high proportion of sand in its composition. If this is a soil (in which case the differntia must be made clear) it should be moved (or a new class created) and labelled 'sandy clay soil'. Some authorities consider sandy clay to be a soil composed of 45-65% of sand, 0-20% of silt and 35-55% of clay. If the proportion of sand exceeds that of clay, it is unclear whether this is still considered clay (due to other properties) or whether a new class "clay sand" should be created.