|'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 ovoid in shape. The stone material is igneous, likely rhyolite, and has inclusions of dark purple. No obvious mica, but perhaps gold biotite. It is medium grained.
This grinding or milling stone ventral side is roughened and has light use wear. This grinding stone dorsal side has a rusting area of weathering. Light 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 light use. The stone appears to be lightly pecked on the ventral surface; pecking increases the grinding surface for greater traction.
Length - 3.622", Width - 2.952", Height - 1.692", Weight - 0.942 lbs
|Provenance||This artifact was found within the local San Diego County region, 1910-1950.|
|Date||Late Prehistoric (1300-800 YA)LP|
|Culture||Kumeyaay / Diegueño|
|Place of Origin||San Diego County|
|Caption||Mano, rhyolite: ventral view, side A (working surface).|