Copper Artifacts: Correlation with Source Types of Copper Ores

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Science  10 Jun 1966:
Vol. 152, Issue 3728, pp. 1504-1506
DOI: 10.1126/science.152.3728.1504


Six out of eight minor chemical elements, determined by spectroscopic and neutron-activation techniques, were found to be critical in computing a probability that a given copper artifact was derived from one of three types of copper ore: native metal, oxidized ore, reduced ore. Two elements, gold and tin, were apparently alloyed deliberately in many artifacts from both the Old World and the New World.