TY - JOUR
T1 - The question of Eaton
T2 - terrestrial versus meteoritic copper
AU - Buseck, P R
AU - Holdsworth, Edward
AU - Scott, G. Robert
N1 - Funding Information:
Aclmowledgement.s-The specimen of Eaton bolongs to the Niningar Collection at Arizona State University. Dr. H. YAKOWITZB in&y loaned us the samples of NBS. standard brass. Dr. B. MASON provided many of t,he samples of native copper. We thank Drs. H. H. NININGER, W. READ and J. WASSON for helpful comments. The research was supported in part by the National Science Foundation grant GA-25701.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 1973/5
Y1 - 1973/5
N2 - 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.
AB - 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.
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U2 - 10.1016/0016-7037(73)90059-8
DO - 10.1016/0016-7037(73)90059-8
M3 - Article
AN - SCOPUS:49549163513
VL - 37
SP - 1249-1250,IN1-IN3,1251-1254
JO - Geochmica et Cosmochimica Acta
JF - Geochmica et Cosmochimica Acta
SN - 0016-7037
IS - 5
ER -