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| Both faces of an asymmetrical knife (biface) that was broken during excavation. Notice that one face is completely white with patination (weathering), while the other face has an unpatinated edge that shows the original color of the artifact. The material is not local. The unpatinated edge indicates the artifact was picked up long after it was originally abandoned and partially resharpened. This sort of recycling was probably a lot more common than archeologists realize. |