A whole hand-held grinding stone, also known as a mano in Southern California archaeology. This bifacial stone is used with one hand for grinding and was shaped/unshaped but shouldered in construction. It is rectangular in shape. This stone is fire-affected. The stone material is granodiorite with feldspar, hornblende, and quartz. It is coarse-grained.
This grinding or milling stone ventral side is smooth. This grinding stone dorsal side is pecked with some staining. Striations appearing on the surface suggest that this mano was used in an undulating or back and forth movement.
Length - 4.015", Width - 3.385", Height - 1.850", Weight - 1.761 lbs.
|Provenance||This artifact was found within the local San Diego County region, collected 1910-1950.|
|Date||Late Prehistoric (1300-800 YA)|
|Culture||Kumeyaay / Diegueño|
|Place of Origin||CA|