The question of Eaton: terrestrial versus meteoritic copper

P R Buseck, Edward Holdsworth, G. Robert Scott

Research output: Contribution to journalArticlepeer-review


The Eaton 'meteorite' contains roughly 66 per cent Cu, 33 per cent Zn and <0.1 per cent Ni. In contrast, native Cu from other meteorites contains >90 per cent Cu, <5 per cent Zn and in those samples in which it could be measured, 0.4-2.4 per cent Ni. The major phases and inclusions of Eaton closely resemble those in commercial yellow brass. Eaton contains α and β Cu-Zn, small Pb inclusions around the Cu-Zn crystals and larger Ca aluminosilicate inclusions similar to those from sand casting molds. Based on these data Eaton does not appear to be a meteorite. Both meteoritic and terrestrial native copper are striking for their relatively high purity. Meteoritic Cu appears to be distinguishable from terrestrial material by its higher Ni contents.

Original languageEnglish (US)
Pages (from-to)1249-1250,IN1-IN3,1251-1254
JournalGeochimica et Cosmochimica Acta
Issue number5
StatePublished - May 1973

ASJC Scopus subject areas

  • Geochemistry and Petrology


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