A nanocomposite (i.e., fine-particulate material that is heterogeneous at the nanoscale level, at less than 10^-7 meters) where one or more of the constituent fine-particulate materials are clay minerals. Other parts of the composite may be, for example, polymers, which act as the dispersant. Some clay composites are fabricated with the polymer both around the clay particle and in the interlayer between the 2:1 or 1:1 layers.
Cf., nanocomposite