Reports

Indium as an Impurity in Ancient Western Mexican Tin and Bronze Artifacts and in Local Tin Ore

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Science  10 Feb 1967:
Vol. 155, Issue 3763, pp. 686-687
DOI: 10.1126/science.155.3763.686

Abstract

The presence of indium in a nodule of cassiterite from the State of Guerrero increases the probability that ancient tin and bronze artifacts from Guerrero, which contain indium as an impurity, were made locally from metal extracted from local tin ore.