MIL03346, the most oxidized Martian meteorite: A first look at spectroscopy, petrography, and mineral chemistry

Details MIL03346, the most oxidized Martian meteorite: A first look at spectroscopy, petrography, and mineral chemistry MIL03346, the most oxidized Martian meteorite: A first look at spectroscopy, petrography, and mineral chemistry

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jgre..11009005d&link_type=abstract

Journal of Geophysical Research, Volume 110, Issue E9, CiteID E09005

Other

18

Planetary Sciences: Solar System Objects: Mars, Planetary Sciences: Solar System Objects: Meteorites And Tektites (1028, 3662), Mineral Physics: Nmr, Mossbauer Spectroscopy, And Other Magnetic Techniques, Mineralogy And Petrology: Mineral And Crystal Chemistry (1042)

Scientific paper

Meteorite MIL03346, recovered from Antarctica, is a nakhlite: an augite clinopyroxenite inferred to have originated from Mars' surface. MIL03346 contains ~70% augite and 3% olivine in a fine-grained mesostasis of basaltic glass, olivine, titanomagnetite, and pyrrhotite. Part of the olivine is altered to fine-grained ferric clays and oxides: ``iddingsite'' as described in other nakhlites. Chemical compositions of augite and olivine (FeO/MnO and Fe/Mg) are nearly identical to those of other nakhlites and are consistent with a Martian origin. The augite contains significant Fe3+: ~24% of total iron by Mössbauer spectroscopy and ~13% by elemental analyses and crystal chemistry. This proportion of Fe3+ in augite is consistent with high-temperature equilibration near the QFM oxygen buffer. Thermal emission spectra are similar to those of other nakhlites. Visible to mid-IR spectra of MIL03346 show the same absorption features as do other nakhlites but at distinctly lower reflectances (which likely represent Fe3+ in augite and magnetite). MIL03346 appears to contain the most Fe3+ of any Martian meteorite studied to date and to have come from the most oxidizing magmatic environment yet reported.

Affiliated with

Also associated with

No associations

Rating

MIL03346, the most oxidized Martian meteorite: A first look at spectroscopy, petrography, and mineral chemistry does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with MIL03346, the most oxidized Martian meteorite: A first look at spectroscopy, petrography, and mineral chemistry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and MIL03346, the most oxidized Martian meteorite: A first look at spectroscopy, petrography, and mineral chemistry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-757471