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

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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 - 1995

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carbonaceous chondrites
pentlandite
carbonaceous chondrite
cobalt
nickel
minerals
troilite
metal
mineral
magnetite
metals
matrix
matrices

ASJC Scopus subject areas

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

Cite this

Cobalt-rich, nickel-poor metal (wairauite) in the Ningqiang carbonaceous chondrite. / Xin Hua, Hua; Eisenhour, D. D.; Buseck, P R.

In: Meteoritics, Vol. 30, No. 1, 1995, p. 106-109.

Research output: Contribution to journalArticle

Xin Hua, Hua ; Eisenhour, D. D. ; Buseck, P R. / Cobalt-rich, nickel-poor metal (wairauite) in the Ningqiang carbonaceous chondrite. In: Meteoritics. 1995 ; Vol. 30, No. 1. pp. 106-109.
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