Object Record

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Collection Speer Collection
Catalog Number 1999.0001.1329
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 circular in shape. The stone material has gold (weathered biotite) mica (and possibly muscovite mica) and inclusions of quartz. It is coarse grained.

This grinding or milling stone ventral side is worn with some flake losses. Its dorsal side is smooth and pitted. 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 use. The stone appears to be pecked on the all surfaces; pecking increases the grinding surface for greater traction.

Length - 4.055", Width - 3.976", Height - 1.968", Weight - 1.877 lbs.

Provenance This artifact was found within the local San Diego County region, collected 1910-1950.
Date Late Prehistoric (1300-800 YA)
Material Volcanic Cobble
Culture Kumeyaay / DiegueƱo
Place of Origin CA, SDi
Caption Mano, rhyolite: ventral view, side A (working surface).