|'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 diorite with biotite, augite, plagioclase and a trace of quartz. It is medium grained.
This grinding or milling stone's ventral side is smooth. Its dorsal side is smooth and has red staining across half the surface that continues over and onto a small potion of the ventral side. Striations appearing on the surface suggest that this mano was used in an undulating or back and forth movement. The stone appears to be lightly pecked; pecking increases the grinding surface for greater traction.
Length - 3.937", Width - 3.858", Height/Thickness - 1.929", Weight - 1.795 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||CA|