Object Record

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Collection Speer Collection
Catalog Number 1999.0001.1349
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 is a granitic (diorite) with muscovite mica and inclusions of reddish rust on the ventral side. It is fine grained.

This grinding or milling stone ventral side is flat creating a distinct ring. This grinding stone dorsal side is rounded and sloping. Striations appearing on the surface suggest that this mano was used in an undulating or back and forth movement (perhaps also rotary). Wear marks on the perimeter sides suggest grinding use and sides are rough. The stone appears to be heavily pecked on the ventral surface; pecking increases the grinding surface for greater traction.

Length - 4.25", Width - 4.094", Height -2.125 ", Weight - 2.011 lbs.

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