Object Record

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Collection Speer Collection
Catalog Number 1999.0001.1178
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 rectangular in shape. The stone material is a volcanic with gold biotite mica and inclusions of red and green stone with a porphorytic surface from eroding crystals. It is medium grained.

This grinding or milling stone ventral side is flat and square. This grinding stone dorsal side is rounded and somewhat flat in the middle. Striations appearing on the surface faintly and may suggest that this mano was used in an undulating or back and forth movement. Wear marks on end suggests grinding. Use wear is light. The stone appears to be unpecked on the total surface; the holes in the exterior seem due to the rock material rather than deliberate pecking (that increases the grinding surface for greater traction).

Length - 4.173", Width - 3.425", Height - 2.598", Weight - 2.377 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 San Diego County
Caption Mano, volcanic: ventral view, side A (working surface).