|'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 rectangular in shape. The stone material is granitic with gold (weathered biotite) mica and a large inclusion of yellow that produces a rust or red weathered circle. It is coarse grained. The surface is crumbly and exfoliating.
This grinding or milling stone ventral side is polished and pecked. The grinding stone dorsal side is eroding with only a small portion of polish. 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 exhibit shouldering. The stone appears to be pecked only on the ventral surface; pecking increases the grinding surface for greater traction.
Length - 4.488", Width - 3.582", Height - 1.850", Weight - 1.880 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 (usewear polish, shouldering, pecking)|