|'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 unusually square and loaf-shaped. The stone material is a granitic (leucocratic, granodiorite) with muscovite and gold biotite mica that may suggest higher radioactivity. It is coarse grained.
This grinding or milling stone's ventral side is smooth and polished. Its dorsal side is rougher. Striations appearing on the surfaces suggest that this mano was used in an undulating or back and forth movement. Wear marks on the perimeter sides suggest grinding. The stone appears to be pecked on the dorsal and perimeter sides and unpecked on the ventral surface; pecking increases the grinding surface for greater traction.
Length - 3.346", Width - 3.346", Height - 2.598", Weight - 2.073 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, graniodiorite: ventral view, side A (smooth rounded working surface).|