|'Iipay Aa Name||hapiichaa|
A whole hand-held grinding stone, also known as a mano in Southern California archaeology. This bifacial stone is used with one hand for grinding and was shaped in construction; it is shouldered by usewear. It is oval in shape. The stone material is a vesicular basalt with quartz inclusions. It is coarse grained.
This grinding or milling stone's ventral side has heavy use with dense pecking (this may also be the natural vesicular surface) and slight polish. Its dorsal side is smooth and may be sandblasted with some pecking. Striations appearing on the surface suggest that this mano was used in an undulating or back and forth movement. The perimeter sides and ends are rough and pecked as a continuation from the ventral side. Pecking increases the grinding surface for greater traction.
Length - 4.370", Width - 3.582", Depth - 1.314", Weight - 1.6 lbs.
|Provenance||This artifact was found within the local San Diego County region, collected 1910-1950.|
|Date||Late Prehistoric (1300-800 YA)|
|Culture||Kumeyaay / Diegueño|
|Place of Origin||San Diego County|