Object Record

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Collection Speer Collection
Catalog Number 1999.0001.1459
Object Name Metate
'Iipay Aa Name 'ehpii
Description A rectangular, portable, grinding stone platform, also known as a basin metate. The color is light gray with fine gray areas and the material is granitic (granodiorite) with biotite mica and larger xenoliths in dark inclusions. Some leaching of red iron oxide is seen on the top, ventral surface. There are two dark stains or growths in the basin top of unknown origin, possibly lichen or other organic growth. It has a central basin that was formed by undulating grinding movements typically with a hand-held grinding stone, called a mano.

This grinding or milling stone's platform is unique in that the four sides slope steeply down to form a small pointed base on the dorsal side, 7 inches long (18 cm) and 1 inch (2.5 cm) across. There is an 1.5 inch (3.5 cm) depression or basin on the ventral side. The grinding activity would be unstable unless the stone was supported by wedging in rock, sand or loose soil. Construction of the stone has left all edges rough, angular and fragmented. The top ventral perimeter is rough and angular with the exception of one semi-circular edge that forms an extended flat area. The sloping sides forming the wedge are fairly rough with the exception of one smoother side. The top of the platform including the basin are polished smooth.

Length - 10", Width - 10", Height - 11.50", Weight - 44 lbs.

Provenance This artifact was found within the local San Diego County region, 1910-1950.
Date Late Prehistoric (1300-800 YA)
Material Granitic
Culture Kumeyaay / DiegueƱo
Place of Origin CA
Caption Metate, basin, granitic. Ventral horizontal view, side A.