On the Wentworth scale, they have a grain size less than 4 micrometers, which makes them smaller than silt and all others on the chart.
Minerals associated with them are aluminium phyllosilicates and the four divisions of them are Illite, Kaolinite, smectite, and Chlorite. A common type is Bentonite and most have a plastic state when in contact with water. The neoformation of them occurs through the chemical weathering of rocks and soil. On the Wentworth scale, they have a grain size less than 4 micrometers, which makes them smaller than silt and all others on the chart. For ten points identify this type of material which can be turned to ceramics in a kiln.
Minerals associated with them are aluminium phyllosilicates and the four divisions of them are Illite, Kaolinite, smectite, and Chlorite.
Clay