|'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 circular in shape. The stone material is a granitic (diorite) with muscovite mica and inclusions of reddish rust on the ventral side. It is fine grained.
This grinding or milling stone ventral side is flat creating a distinct ring. This grinding stone dorsal side is rounded and sloping. Striations appearing on the surface suggest that this mano was used in an undulating or back and forth movement (perhaps also rotary). Wear marks on the perimeter sides suggest grinding use and sides are rough. The stone appears to be heavily pecked on the ventral surface; pecking increases the grinding surface for greater traction.
Length - 4.25", Width - 4.094", Height -2.125 ", Weight - 2.011 lbs.
This artifact was found within the local San Diego County region, 1910-1950.
|Date||Late Prehistoric (1300-800 YA)|
|Culture||Kumeyaay / Diegueño|
|Place of Origin||San Diego County|
|Caption||Mano, granitic: ventral view, side A (flat, pecked working surface).|