|'Iipay Aa Name||hapiichaa|
A whole hand-held grinding stone, also known as a mano, in Southern California archaeology. This stone is bifacial and is used with one hand for grinding. It has been shaped and is oval. The stone material is a sandstone (sedimentary) with muscovite mica. It is coarse grained.
This grinding or milling stone's ventral platform is polished for an area that is 3.25 inches (8.4 cm) long and 2.36 inches (6 cm) wide. Its dorsal side is polished for an area that is 3 inches (7.6 cm) long and 2 inches (5 cm) wide. Striations appearing on the surface suggest that this mano was used in an undulating or back and forth movement. Wear marks on the sides suggest use; they are polished. Construction of the stone created a vesicular surface on all sides. The stone appears to be pecked on the surface; pecking increases the grinding surface for greater traction. Some brown cortex is seen on one end and there is a chipped area next to a ventral edge on one side.
Length - 3.779", Width - 2.834", Height - 2.047", Weight - 1.209 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, sandstone: ventral view, side A (pecked and polished working surface)|