Carlisle Lakes and Allan Hills 85151 - Members of a new chondrite grouplet

Details Carlisle Lakes and Allan Hills 85151 - Members of a new chondrite grouplet Carlisle Lakes and Allan Hills 85151 - Members of a new chondrite grouplet

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989gecoa..53.3035r&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 53, Nov. 1989, p. 3035-3044.

Computer Science

15

Chondrites, Lakes, Meteoritic Composition, Olivine, Carbonaceous Chondrites, Isotopes, Mineralogy, Petrography

Scientific paper

Carlisle Lakes and Allan Hills 85151 (ALH85151) are members of a new grouplet of chondrites characterized by FeO-rich silicates (olivine Fa = 38-41 mol pct), unsual oxygen isotopic composition, and abundant (about 35 vol pct) recrystallized matrix material. Yamato 75302 is not as well-characterized, but is probably also a member of this grouplet. Siderophile elements in Carlisle Lakes and ALH85151 are fractionated relative to CI chondrites: refractory and common siderophiles are at about 1 x CI, Ga and As are lower (0.6-0.9 x CI), and Au is very low (0.17 x CI and 0.36 x CI in Carlisle Lakes and ALH85151, respectively). The low Au abundance may indicate that Au resided mainly in fine-grained metal particles that were suspended in the nebular gas during the time these chondrites agglomerated. The oxidation state of chondrites may be controlled by the presence of oxidizing agents (.e.g., magnetite) in agglomerated matrix material. The high matrix abundance that characterizes this new grouplet may thus be responsible for the high oxidation state of these meteorites.

Affiliated with

Also associated with

No associations

Rating

Carlisle Lakes and Allan Hills 85151 - Members of a new chondrite grouplet 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 Carlisle Lakes and Allan Hills 85151 - Members of a new chondrite grouplet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Carlisle Lakes and Allan Hills 85151 - Members of a new chondrite grouplet will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1615412