Object Record

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Collection Speer Collection
Catalog Number 1999.0001.1387a
Object Name Mano
'Iipay Aa Name hapiichaa
Description A whole hand-held grinding stone, also known as a mano in Southern California archaeology. The stone has unusual markings for a mano. It is possibly a sharpening stone or has another function in addition to grinding. This bifacial stone is used with one hand for grinding and was shaped in construction; it is shouldered by usewear. It is rectangular or squarish in shape. The stone material is basalt. It is fine grained.

This grinding or milling stone's ventral side is pecked and polished. At either end of this side are a series of fairly similar tick marks between .5 to 1.5 cm in length. On one end there are 6-8 and at the other end there are 5-6 tick marks with a chip removed from the center of these. The purpose is undetermined. There are no parallel marks on the other side of the stone. This grinding stone's dorsal side is smooth with some burnished areas horizontally across the stone. In the center are less even tick marks and some pecking. Striations appearing on the surface suggest that this mano was used in an undulating or back and forth movement. Wear marks on the perimeter ends may indicate grinding. The stone appears to be pecked on the end surfaces; pecking increases the grinding surface for greater traction.

Dimensions:
Length - 3.691", Width - 2.857", Height - 1.784", Weight - 1.2 lbs.


Provenance This artifact was found within the local San Diego County region, 1910-1950.
Date Late Prehistoric (1300-800 YA)
Material Basalt
Culture Kumeyaay / DiegueƱo
Place of Origin San Diego County