Geochemical Relationships Between Some Pallasites and Iron Meteorites

Edward R. D. Scott
Department of Mineralogy and Petrology, University of Cambridge, Downing Place, Cambridge CB2 3EW

Summary: Published analyses for 14 trace and minor siderophilic elements have been interpreted to indicate a close relationship between the IIIAB iron meteorites and the main group of pallasites. These two groups respectively account for about 32 and 75 % of all irons and pallasites. The composition of the metal in the main group pallasites is very close to that calculated for the liquid after 80 % of a IIIAB iron melt has fractionally crystallized. The pallasites probably formed by the intrusion of residual molten metal from the core into a surrounding olivine mantle.

Mineralogical Magazine; June 1977 v. 41; no. 318; p. 265-272; DOI: 10.1180/minmag.1977.041.318.15
© 1977, The Mineralogical Society
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