Object Record

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Collection Speer Collection
Catalog Number 1999.0001.1169
Object Name Mano
'Iipay Aa Name hapiichaa
Description 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
Material Volcanic Cobble
Culture Kumeyaay / DiegueƱo
Place of Origin San Diego County
Caption Mano, rhyolite: ventral view, side A (working surface).