Object Record

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Collection Speer Collection
Catalog Number 1999.0001.1327
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 diorite with biotite, augite, plagioclase and a trace of quartz. It is medium grained.

This grinding or milling stone's ventral side is smooth. Its dorsal side is smooth and has red staining across half the surface that continues over and onto a small potion of the ventral side. Striations appearing on the surface suggest that this mano was used in an undulating or back and forth movement. The stone appears to be lightly pecked; pecking increases the grinding surface for greater traction.

Dimensions:
Length - 3.937", Width - 3.858", Height/Thickness - 1.929", Weight - 1.795 lbs.
Provenance This artifact was found within the local San Diego County region, collected 1910-1950.
Date Late Prehistoric (1300-800 YA)
Material Diorite
Culture Kumeyaay / DiegueƱo
Place of Origin CA
Caption Dorsal view