|'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 has gold (weathered biotite) mica (and possibly muscovite mica) and inclusions of quartz. It is coarse grained.
This grinding or milling stone ventral side is worn with some flake losses. Its dorsal side is smooth and pitted. 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 use. The stone appears to be pecked on the all surfaces; pecking increases the grinding surface for greater traction.
Length - 4.055", Width - 3.976", Height - 1.968", Weight - 1.877 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, SDi|
|Caption||Mano, rhyolite: ventral view, side A (working surface).|