|'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 rhyolite with few flecks of gold biotite mica. It is coarse grained.
This grinding or milling stone ventral side is flattened somewhat polished from grinding. Its dorsal side is flattened and somewhat polished from grinding. Striations faintly 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 some smoothing and possible grinding. The stone appears to be pecked on both dorsal and ventral surfaces; pecking increases the grinding surface for greater traction.
Length - 4.881", Width - 3.622", Height - 1.771", Weight - 2.019 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,rhyolite: ventral view, side A, polished, pecked, flat working surface|