|'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 rectangular in shape. The stone material is a volcanic with gold biotite mica and inclusions of red and green stone with a porphorytic surface from eroding crystals. It is medium grained.
This grinding or milling stone ventral side is flat and square. This grinding stone dorsal side is rounded and somewhat flat in the middle. Striations appearing on the surface faintly and may suggest that this mano was used in an undulating or back and forth movement. Wear marks on end suggests grinding. Use wear is light. The stone appears to be unpecked on the total surface; the holes in the exterior seem due to the rock material rather than deliberate pecking (that increases the grinding surface for greater traction).
Length - 4.173", Width - 3.425", Height - 2.598", Weight - 2.377 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, volcanic: ventral view, side A (working surface).|