Soil Texture
SandA granular material that results from the disintegration of rocks, consists of particles smaller than gravel but coarser than silt. Sand, being the larger size of particles, feels gritty. It's particle diameters are:
Very coarse sand -2.0 to 1.0 millimeters Coarse sand-1.0 to 0.5 millimeters Medium sand- 0.5 to .25 millimeters Fine sand -0.25 to 0.10 millimeters Very fine sand-0.10 to 0.05 millimeters |
SiltSilt, being moderate in size, has a smooth or floury texture. It is a loose sedimentary material with rock particles usually is a deposit of sedimentary material.
It's particle diameter ranges from: Silt-0.05 to 0.002 millimeters |
ClayClay, being the smaller size of particles, feels sticky. An earthy material that is plastic when moist but hard when fired, that is composed mainly of fine particles of hydrous aluminum silicates and other minerals. It's particle diameter range is:
Clay-below 0.002 millimeters |
Texture Lab using sedimentation
Calculate the %s of all the soil separates (sand silt and clay) follow the instructions given on the document above.