|'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 but shouldered by usewear. It is squarish in shape. The stone material is granitic with biotite mica. It is medium grained.
This grinding or milling stone ventral side is darker, oily, and heavily pecked. Its dorsal side is polished and pecked with a large area missing. Striations appearing on the surface suggest that this mano was used in an undulating or back and forth movement. Wear marks on the perimeter sides indicate use on the sharply shouldered side. The stone appears to be pecked on most surfaces; pecking increases the grinding surface for greater traction.
Length - 4.291", Width - 3.740", Height - 1.771", Weight - 1.771 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|
|Caption||Mano, granitic: ventral view, side A (pecked oily working surface).|