Sulfide-rich metallic impact melts from chondritic parent bodies

Devin L. Schrader, Dante Lauretta, Harold C. Connolly, Yulia S. Goreva, Dolores H. Hill, Ken J. Domanik, Eve L. Berger, Hexiong Yang, Robert T Downs

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Sacramento Wash 005 (SaW) 005, Meteorite Hills 00428 (MET) 00428, and Mount Howe 88403 (HOW) 88403 are S-rich Fe,Ni-rich metal meteorites with fine metal structures and homogeneous troilite. We compare them with the H-metal meteorite, Lewis Cliff 88432. Phase diagram analyses suggest that SaW 005, MET 00428, and HOW 88403 were liquids at temperatures above 1350 °C. Tridymite in HOW 88403 constrains formation to a high-temperature and low-pressure environment. The morphology of their metal-troilite structures may suggest that MET 00428 cooled the slowest, SaW 005 cooled faster, and HOW 88403 cooled the quickest. SaW 005 and MET 00428 contain H-chondrite like silicates, and SaW 005 contains a chondrule-bearing inclusion that is texturally and compositionally similar to H4 chondrites. The compositional and morphological similarities of SaW 005 and MET 00428 suggest that they are likely the result of impact processing on the H-chondrite parent body. SaW 005 and MET 00428 are the first recognized iron- and sulfide-rich meteorites, which formed by impact on the H-chondrite parent body, which are distinct from the IIE-iron meteorite group. The morphological and chemical differences of HOW 88403 suggest that it is not from the H-chondrite body, although it likely formed during an impact on a chondritic parent body.

Original languageEnglish (US)
Pages (from-to)743-758
Number of pages16
JournalMeteoritics and Planetary Science
Volume45
Issue number5
DOIs
StatePublished - May 2010

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impact melts
parent body
meteorites
meteorite
sulfides
sulfide
melt
chondrites
chondrite
troilite
metal
metals
iron meteorites
tridymite
chondrule
cliffs
iron meteorite
cliff
low pressure
silicates

ASJC Scopus subject areas

  • Geophysics
  • Space and Planetary Science

Cite this

Sulfide-rich metallic impact melts from chondritic parent bodies. / Schrader, Devin L.; Lauretta, Dante; Connolly, Harold C.; Goreva, Yulia S.; Hill, Dolores H.; Domanik, Ken J.; Berger, Eve L.; Yang, Hexiong; Downs, Robert T.

In: Meteoritics and Planetary Science, Vol. 45, No. 5, 05.2010, p. 743-758.

Research output: Contribution to journalArticle

Schrader, DL, Lauretta, D, Connolly, HC, Goreva, YS, Hill, DH, Domanik, KJ, Berger, EL, Yang, H & Downs, RT 2010, 'Sulfide-rich metallic impact melts from chondritic parent bodies', Meteoritics and Planetary Science, vol. 45, no. 5, pp. 743-758. https://doi.org/10.1111/j.1945-5100.2010.01053.x
Schrader, Devin L. ; Lauretta, Dante ; Connolly, Harold C. ; Goreva, Yulia S. ; Hill, Dolores H. ; Domanik, Ken J. ; Berger, Eve L. ; Yang, Hexiong ; Downs, Robert T. / Sulfide-rich metallic impact melts from chondritic parent bodies. In: Meteoritics and Planetary Science. 2010 ; Vol. 45, No. 5. pp. 743-758.
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