Object Record

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Collection Speer Collection
Catalog Number 1999.0001.1434
Object Name Metate
'Iipay Aa Name 'ehpii
Description A whole, rectangular-shaped grinding stone platform with a depression, also known as a basin metate. The color is a light gray and the material is granitic (granodiorite) with calcite, quartz, biotite and gold (weathered biotite) mica. It has a central basin that was formed by undulating, back and forth, grinding movements typically with a hand-held grinding stone, called a mano.

This grinding or milling stone's ventral platform is polished and well-used with an exhausted base. The basin is 21 inches (53.5 cm) long,10 inches (25.5 cm) wide and 3.9 inches (9.9 cm) deep. There is a large hole in the base from usewear measuring 7 inches (17.7 cm) by 5 inches (12.7 cm) and thickness of 1.5 inches (4 cm). Construction of the stone created a polished, rounded surface. The dorsal side of the stone is curved with a flat base measuring 16 inches (40.7 cm) x 9 inches (23 cm). It shows evidence of possible double-sided use. There is a small area of brownish yellow lichen on the lip.

Length - 24.881", Width - 13.818", Height - 5.196", Weight - 72 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 Basin Metate, granitic. Ventral horizontal view, side A