Clay
These are from the northern part of the state, D'arbonne, D'lutre Bayous, and Ouachita River. I did work in the Lafayette area and was only able to get out once or twice. I was able to find some worked stone those few times by using the same methods as in north La. Higher contours next to, or close to water, bayous or swamps. If I remember correctly, the S.W. part of the state has a lot of prairie type land, use contour maps and google earth to identify those higher areas. I'm not sure how far to the west the salt domes go (like Jefferson and Avery Island), but they should be full of artifacts.