Hematite, pyroxene, and phyllosilicates on Mars

implications from oxidized impact melt rocks from Manicouagan Crater, Quebec, Canada

R. V. Morris, D. C. Golden, James Bell, H. V. Lauer

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

Visible and near-IR reflectivity, Mossbauer, and X-ray diffraction data were obtained on powders of impact melt rock from the Manicouagan Impact Crater located in Quebec, Canada. Manicouagan data are consistent with previous assignments of hematite and pyroxene to the ~850 and ~1000 nm bands observed in Martian reflectivity spectra. Manicouagan data also show that possible assignments for intermediate band positions (900-920 nm) in Martian spectra are pyroxene and/or hematite-pyroxene assemblages. By analogy with impact melt sheets and in agreement with observables for Mars, oxidative alteration of Martian impact melt sheets above 205°C and subsequent erosion could produce rocks and soils with variable proportions of hematite, pyroxene, and phyllosilicates as iron-bearing mineralogies. -from Authors

Original languageEnglish (US)
Pages (from-to)5319-5328
Number of pages10
JournalJournal of Geophysical Research
Volume100
Issue numberE3
StatePublished - 1995
Externally publishedYes

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impact melts
Quebec
phyllosilicate
hematite
Canada
craters
pyroxene
mars
crater
Mars
Rocks
melt
rocks
rock
reflectivity
reflectance
Bearings (structural)
erosion
soils
proportion

ASJC Scopus subject areas

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

Cite this

Hematite, pyroxene, and phyllosilicates on Mars : implications from oxidized impact melt rocks from Manicouagan Crater, Quebec, Canada. / Morris, R. V.; Golden, D. C.; Bell, James; Lauer, H. V.

In: Journal of Geophysical Research, Vol. 100, No. E3, 1995, p. 5319-5328.

Research output: Contribution to journalArticle

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