Heterogeneous histories of Ni-bearing pyrrhotite and pentlandite grains in the CI chondrites Orgueil and Alais

Heterogeneous histories of Ni-bearing pyrrhotite and pentlandite grains in the CI chondrites Orgueil and Alais

Compositional and structural analyses of CI chondrite iron–nickel sulfide grains reveal heterogeneity both across and within the Orgueil and Alais meteorites. Orgueil grains with the 4C monoclinic pyrrhotite structure have variable metal‐to‐sulfur ratios and nickel contents. These range from the nom...

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Veröffentlicht in:Meteoritics & planetary science 2016-10, Vol.51 (10), p.1813-1829
Hauptverfasser: Berger, Eve L., Lauretta, Dante S., Zega, Thomas J., Keller, Lindsay P.
Format: Artikel
Sprache:eng
Schlagworte:
Alterations
Grains
Heterogeneity
Nickel
Nickel ores
Pentlandite
Pyrrhotite
Sulfides
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Zusammenfassung:Compositional and structural analyses of CI chondrite iron–nickel sulfide grains reveal heterogeneity both across and within the Orgueil and Alais meteorites. Orgueil grains with the 4C monoclinic pyrrhotite structure have variable metal‐to‐sulfur ratios and nickel contents. These range from the nominal ratio of 0.875 for Fe7S8 with
ISSN:1086-9379
1945-5100
DOI:10.1111/maps.12721