Object Record

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Collection Speer Collection
Catalog Number 1999.0001.1382
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 unusually square and loaf-shaped. The stone material is a granitic (leucocratic, granodiorite) with muscovite and gold biotite mica that may suggest higher radioactivity. It is coarse grained.

This grinding or milling stone's ventral side is smooth and polished. Its dorsal side is rougher. Striations appearing on the surfaces 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 dorsal and perimeter sides and unpecked on the ventral surface; pecking increases the grinding surface for greater traction.

Length - 3.346", Width - 3.346", Height - 2.598", Weight - 2.073 lbs.

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