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by AlotOfReading 1660 days ago
Native copper working is considered metallurgy in archaeology. If you disagree, feel free to take it up with the archaeometallurgists.

Moreover, purification from ores was done. The so-called copper bells of the southwest were mainly produced from ores rather than native copper and were often alloyed with arsenic or silver to modify the color. The main center of production was paquimé (~180mi west of the Rio Grande), but the cultural area extends well over the border into AZ, NM, and CO.