|'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 square in shape. The stone material is a sandstone (sedimentary) with muscovite mica and inclusions of rounded crystals from dark granite. There are holes where the grains weathered out (it is not igneous basalt). It is medium grained.
This grinding or milling stone's ventral side is rough, pecked with a white accretion. Its dorsal side is flat and smooth. 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 grinding. The stone appears to be pecked on the ventral surface; pecking increases the grinding surface for greater traction.
Length - 3.307", Width - 2.992", Height - 1.653", Weight - 1.518 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 working surface).|