Sand Sphericity

A description of a sand grain according to how similar the grain is to a sphere. The nearer a particle is to a perfect sphere then the better the drainage potential and reduced likelihood of compaction due to maintaining a higher air-pore ratio between particles (in theory).

This is typically described as either
1. High Sphericity is where the sand grains are very close to a perfect ball (sphere) shape, although the outer surface can range from very smooth like a ball to having irregularities, depending on the category of roundness (very angular to well rounded).
2. Medium Sphericity is where the outline and shape of the sand is in between that of a perfect sphere (high sphericity) and a lozenge (low sphericity), often exhibiting elements of both on a single grain.
3. Low Sphericity is where sand grains will be irregular in shape, typically elongated like a lozenge in general outline, with the edges and surface varying from smooth to jagged depending on the category of roundness.