Trace phases in CI chondrites Alais and Orgueil

Mackinnon, Ian D.R. & Kaser, Stacy A. (1990) Trace phases in CI chondrites Alais and Orgueil. Meteoritics, 25(4), pp. 381-382.

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Minor phases in meteorites are important indicators of parent-body processing conditions. For example, Kerridge and others (1, 2) have shown that the presence of sulphates and carbonates in CI chondrites provides evidence for aqueous alteration on the parent body. Carbonates and sulphates are relatively prominent components of CI chondrites (e.g., -11.6 wt.% of total mass' and> 10 um diameter) compared to minor phases in most other classes of meteorite and thus, have been amenable to macro scale characterisation using optical petrography and electron microprobe analysis. These minor phases account for significant accumulations of low abundance elements, such as Na, S, K, Ca, and Ni within the bulk meteorite. The fine grained matrix, which consists mostly oflizardite- and montmorillonite-like clays (3), is the...

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ID Code: 55685
Item Type: Journal Article
Refereed: Yes
Additional Information: GeoRef, Copyright 2009, American Geological Institute.
Alais Meteorite
Keywords: carbonaceous chondrites, carbonates, chondrites, CI chondrites, composition, meteorites, Orgueil Meteorite, properties, stony meteorites, sulfates, trace elements
ISSN: 0026-1114
Subjects: Australian and New Zealand Standard Research Classification > EARTH SCIENCES (040000) > GEOLOGY (040300) > Extraterrestrial Geology (040302)
Australian and New Zealand Standard Research Classification > EARTH SCIENCES (040000) > GEOLOGY (040300) > Mineralogy and Crystallography (040306)
Divisions: Current > Institutes > Institute for Future Environments
Deposited On: 22 Jan 2013 22:15
Last Modified: 22 Jan 2013 22:15

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