mineral particles, < 2.0 mm (0.08 in) in equivalent diameter, ranging between specified size limits —note the names and size limits of separates recognized in the US are very coarse sand, 2.0 to 1.0 mm (0.08 to 0.04 in); coarse sand, 1.0 to 0.5 mm (0.04 to 0.02 in); medium sand, 0.5 to 0.25 mm (0.02 to 0.01 in); fine sand, 0.25 to 0.10 mm (0.01 to 0.004 in); very fine sand, 0.10 to 0.05 mm (0.004 to 0.002 in); silt, 0.05 to 0.002 mm (0.002 to 0.00008 in); and clay, < 0.002 mm (< 0.00008 in) This definition last updated 10/07/2008