|'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 shouldered by usewear. It is circular in shape. The stone material is a volcanic cobble with muscovite mica. It is very coarse grained.
This grinding or milling stone's ventral side is pecked and polished; pecking increases the grinding surface for greater traction. There is staining on the ventral side. Its dorsal side is smooth and lightly pecked. There are a few rusted areas appearing as lines on the dorsal side of the stone. 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 some grinding use and battering.
Length - 4.566", Width - 4.133", Height - 1.889", Weight - 1.964 lbs.
|Provenance||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, volcanic cobble: ventral view, side A (pecked, polish use wear).|