Distal fragment of a bluish gray whetstone, 50% covered in thick white corrosion. The tool is semi-circular in section--flat on one side and rounded on the other. At it's tip, it it rounded and symmetrical, widening slighly from the medial portion towards the extant tip. Chemical cleaning will be necessary for any future analysis. Chemically cleaned on 2008-12-01.
Retouch:
Patination: