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 but shouldered in construction. It is squarish in shape. The stone material is Rhyolite. It is medium to course grained.
This grinding or milling stone ventral side has some pitting, but is generally smooth. Its dorsal side is smooth with some staining/debris on one end. Striations appearing on the surface suggest that this mano was used in an undulating or back and forth movement.
Length - 3.296", Width - 2.970", Depth - 1.675", Weight - 1.1 lbs.
|Provenance||Found within the local San Diego County region, collected 1910-1950.|
|Date||Late Prehistoric (1300-800YA)|
|Culture||Kumeyaay / Diegueño|
|Place of Origin||CA|