|'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 unshaped but shouldered through usewear. It is ovoid in shape. The stone material is a sandstone (sedimentary) with muscovite mica. It is fine grained.
This grinding or milling stone ventral side is twisted and smooth, perhaps from the angle of grinding, producing shouldering. This grinding stone dorsal side is smooth and somewhat saddlebacked. 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 suggest grinding. The stone appears to be pecked on the perimeter sides; pecking increases the grinding surface for greater traction.
Length 4.015", Width 3.188", Height 1.889", Weight 1.310 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, sandstone: ventral view, side A (working surface).|