Object Record
Images
Metadata
Collection |
Speer Collection |
Catalog Number |
1999.0001.1458 |
Object Name |
Flat Mortar |
'Iipay Aa Name |
'ehpii |
Description |
A unique double-sided, whole grinding stone platform with a depression on the ventral side, also known as a basin metate and on the dorsal side is a flat grinding surface, a metate. The color is a light gray with some dark staining and the material is granitic (granodiorite) including some red iron oxide leaching, and muscovite mica. The metate is very large and heavy. This grinding or milling stone's ventral platform is a polished central depression, the basin, that is 15 inches (38.2 cm) long, 11 inches (28 cm) wide and 1 inch (2.6 cm) deep that was formed by rotary grinding movements typically with a hand-held grinding stone, called a mano. Construction of the stone created a shaped ovoid with a smooth surface; there is some flaking in the ventral basin and also on the other side, flat metate from use-wear, possibly. Also noted is dark staining around the perimeter of the ventral basin, possibly from use. The dorsal side of the stone has abrasions around the perimeter that serves as a base. The dorsal grinding area is flat and was formed by undulating (back and forth) movements with a hand stone, called a mano. There is iron oxide and an area of lichen that matches the color of the iron oxide leaching to the surface on the interior of this area. There is also a large inclusion (0.5 x 1 inches) of muscovite schist, possibly. Dimensions: Length - 25.196", Width - 17.244", Height - 5.433", Weight - 109 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 / Diegueño |
Place of Origin |
CA |
Caption |
Double-sided Metate, basin, granitic. Ventral horizontal view, side A |
Audio |