The size, shape, and arrangement of grains or crystals in rocks and also a property of soil, sediment, or similar material. Soil texture class names are assigned to indicate specific ranges of percentage of sand, silt, and clay. As with particle size, several different systems of texture classification are in use, including the British Standard 1377 system and the United States Department of Agriculture system. For rocks, there are also classification schemes. The texture of artifacts is one property used to help identify the source material, conditions and environment of deposition or crystallization and recrystallization, and subsequent geologic history and change.