Below is a photograph of a modified oval mano that has secondary modifications for specialty use. The oval mano measures about 3.25" in width x 2.75" in length x 1.5" thick, is pecked around the edges and is smooth on both faces from use. By examining the interface between pecking around the outside of the mano and the flat smooth grinding surfaces, 2 different periods of pecking are distinguishable. At each end of the mano the flat smooth grinding surface grades off smoothly from the surface area into the pecked edge. This is consistent with pecking the edge first to shape the tool then subsequent use as a grinding stone. In contrast, the pecked indentations on each side of the mano impinge upon the smooth grinding surface suggesting the notches were created after the tool was completed and used for grinding for a period of time. The purpose of the notches may be for hafting or fine control in grinding small amounts of material. If the mano were modified, adding notches for hafting for use as a hammer, chipping from use would be expected on each end. Instead of damage resulting from use as a hammer, one end shows smoothing as if used as a grinder for small amounts of material. This observation leads to the suggestion that this modified mano was used as a pigment grinder in the production of small amounts of pigment for pottery. The modified mano fits nicely in one hand and can be easily manipulated with a rocking motion, such as that required to break up small amounts of natural stone pigment. This was tested with a small amount of turquoise procured locally and indeed it is a simple matter, using a rocking motion, to grind the turquoise into a fine powder suitable for painting on pottery using the modified mano.
Just another example how those who lived on this landscape in the past created and built a life for themselves.
|Face of modified mano|
|Edge of modified mano|
|Experiment - grinding turquoise with modified mano|