Cobalt-rich, nickel-poor metal (wairauite) in the Ningqiang carbonaceous chondrite

Hua Xin Hua, D. D. Eisenhour, P R Buseck

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

A structurally ordered cubic metal grain containing ~39 wt% Co, 61 wt% Fe, and <0.6 wt% Ni (~Fe3CO2) was found associated with troilite and pentlandite in the matrix of the Ningqiang carbonaceous chondrite. This mineral is similar to terrestrial wairauite. Experimental data in the Fe-Co system indicate that this CsCl-type Co-rich metal is stable below 700°C. Phase relations in the Fe-Co-Ni system show that Co cannot fractionate from Ni above 500°C. The dominant opaque minerals of awaruite, magnetite, and pentlandite in Ningqiang sugest relatively oxidizing conditions. -Authors

Original languageEnglish (US)
Pages (from-to)106-109
Number of pages4
JournalMeteoritics
Volume30
Issue number1
StatePublished - Jan 1 1995

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

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