How would you classify a sediment particle that is 0.0020 mm in size?

A sediment particle that is 0.0020 mm in size is classified as a clay particle. In sedimentology, particles are categorized by their size, with clay being defined as particles smaller than 0.002 mm. Therefore, a particle of 0.0020 mm sits at the upper limit of the clay size range and is considered fine-grained sediment.