*Of Interest PING*
Obsidian was the wonder material of the ancient world when it came to small cutting tools. Arguably it still should be considered such.
Soft copper comes into its own when combined with flowing water and fine grit sand as the Egyptians used it.
copper artifacts and ingots an be traced to their point of extraction from the earth by the particular mix of impurities. Most of the copper in the bronze of the Bronze Age is mysterious of origin because it matches the Great lakes source and that is not acceptable to the Archaeology narrative. Barry Fell and others have shown mountains of evidence that there was considerable trans-Atlantic traffic copper trade back to 3000 BC or so. It seems to have ended at the end of the Bronze Age when most of the then extant civilizations collapsed.
Thanks Diana in Wisconsin, this is also this week's GGG Digest ping, may be a first for a "New World" news story, btw. Great find!