Object Record

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Collection Speer Collection
Catalog Number 1999.0001.1388
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 square in shape. The stone material is a sandstone (sedimentary) with muscovite mica and inclusions of rounded crystals from dark granite. There are holes where the grains weathered out (it is not igneous basalt). It is medium grained.

This grinding or milling stone's ventral side is rough, pecked with a white accretion. Its dorsal side is flat and smooth. 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 grinding. The stone appears to be pecked on the ventral surface; pecking increases the grinding surface for greater traction.

Length - 3.307", Width - 2.992", Height - 1.653", Weight - 1.518 lbs.

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