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 in construction. It is oval in shape. The stone is fire affected. The material could be an arkosic sandstone with feldspar, and garnet. It is coarse grained and angular- sub rounded.
This grinding or milling stone's ventral side is heavily used with a rough ring. Its dorsal side is also heavily used with some deep scratches. Striations appearing on the surface suggest that this mano was used in an undulating or back and forth movement. Worn marks on the perimeter sides.
Length - 4.527 ", Width - 3.582", Height/Thickness - 2.086", Weight - 1.961 lbs.
|Provenance||This artifact was found within the local San Diego County region, collected 1910-1950.|
|Date||Late Prehistoric (1300-800 YA)LP|
|Culture||Kumeyaay / Diegueño|
|Place of Origin||CA|