Object Record

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Collection Speer Collection
Catalog Number 1999.0001.1398
Object Name Mano
'Iipay Aa Name hapiichaa
Description A whole hand-held grinding stone, also known as a mano, in Southern California archaeology. This stone is bifacial and is used with one hand for grinding. It has been shaped and is oval. The stone material is a sandstone (sedimentary) with muscovite mica. It is coarse grained.

This grinding or milling stone's ventral platform is polished for an area that is 3.25 inches (8.4 cm) long and 2.36 inches (6 cm) wide. Its dorsal side is polished for an area that is 3 inches (7.6 cm) long and 2 inches (5 cm) wide. Striations appearing on the surface suggest that this mano was used in an undulating or back and forth movement. Wear marks on the sides suggest use; they are polished. Construction of the stone created a vesicular surface on all sides. The stone appears to be pecked on the surface; pecking increases the grinding surface for greater traction. Some brown cortex is seen on one end and there is a chipped area next to a ventral edge on one side.

Dimensions:
Length - 3.779", Width - 2.834", Height - 2.047", Weight - 1.209 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 and polished working surface)