Drawing by Mike Beck. There was a single copper spear point, made by rolling a flat piece of copper into a cone. Although some of the native copper used by precontact peoples was mined from deposits around Lake Superior, small, workable pieces also occur in the glacial deposits that cover the state. They most resembled the St. Croix and Onamia types, which date to the late Middle Woodland period. Interior surface of a ceramic rim sherd decorated by applying a cord-marked stick.
Rims are especially useful because the form and decoration help to distinguish ceramic types.
Exterior surface of a ceramic rim sherd excavated from 21AN106 in 1996. The surface has been decorated by applying a cord-marked stick and dentate stamp, forming patterns in vertical zones. Crushed rock had been used for tempering. Samples of this residue were analyzed to see whether opal phytoliths were present. Most of them contained phytoliths from the chaff of wild rice, but two included phytoliths representing an unidentified wild grass.