Actinide chemistry in Allende Ca-Al-rich inclusions

Details Actinide chemistry in Allende Ca-Al-rich inclusions Actinide chemistry in Allende Ca-Al-rich inclusions

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987gecoa..51..985m&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 51, April 1987, p. 985-999.

Other

4

Actinide Series, Allende Meteorite, Aluminum, Carbon, Inclusions, Meteoritic Composition, Perovskites, Thorium, Uranium, Meteorites, Stony Meteorites, Cv3 Chondrites, Carbonaceous Chondrites, Allende, Cais, Calcium, Aluminum, Inclusions, Actinide, Radiography, Chemistry, Composition, Distribution, Uranium, Thorium, Enrichment, Samples, Meteorite, Fission Tracks, Melilite, Fassaite, Concentration, Perovskite, Fractionation, Volatiles, Alteration, Rare Earth Elements, Volatilization, Heating, Time Scale, Form

Scientific paper

Fission track radiography is used to investigate the U and Th microscale distribution in a set of Allende-meteorite Ca-Al-rich inclusions. In the Type B inclusions, the major phases melilite and fassaite are important actinide host phases, and on the rims of Type B inclusions and throughout all other inclusions studied, perovskite is the dominant actinide host phase. Results suggest that neither alteration nor loss or gain of an actinide-rich phase appears to have been an important Th/U fractionation mechanism, and that volatility differences may be the dominant factor. Th/U and rare earth element abundance patterns for the spinel and perovskite rim suggest rim formation by volatilization of interior material, and within the constraints of the brief time scale required for this heating, several mechanisms for spinel-perovskite rim formation are possible.

Affiliated with

Also associated with

No associations

Rating

Actinide chemistry in Allende Ca-Al-rich inclusions 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 Actinide chemistry in Allende Ca-Al-rich inclusions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Actinide chemistry in Allende Ca-Al-rich inclusions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1348000