Matrix material in type 3 chondrites - Occurrence, heterogeneity and relationship with chondrules

Details Matrix material in type 3 chondrites - Occurrence, heterogeneity and relationship with chondrules Matrix material in type 3 chondrites - Occurrence, heterogeneity and relationship with chondrules

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984gecoa..48.1741s&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 48, Sept. 1984, p. 1741-1757.

Computer Science

21

Chondrites, Chondrule, Meteoritic Composition, Morphology, Chemical Composition, Electron Microscopy, Mineralogy, Petrology, Solar Corona, Meteorites, Martix, Chondrites, Heterogeneity, Chondrules, Rims, Cais, Aggregates, Inclusions, Clasts, Size, Silicates, Composition, Sodium, Concentration, Mineralogy, Magnesium, Aluminum, Calcium, Procedure, Ordinary Chondrites, H Chondrites, L Chondrites, Ll Chondrites, Comparisons, Formation, Samples, Meteorite

Scientific paper

Variations between mean matrix compositions of individual type 3 ordinary chondrites are nearly fivefold, and partly reflect systematic differences between H, L, and LL matrices. Such variations are probably the result of a nebular separation of feldspathic material and ferromagnesian silicates. While compositions of chondrules and their matrix rims are normally unrelated, rim compositions are correlated with those of matrix lumps inside chondrules. Matrix lumps are as heterogeneous as chondrules, but mean chondrule and matrix compositions differ. Since bulk compositions of matrix lumps and rims have probably not changed significantly since their formation, the present matrix samples cannot represent typical chondrule precursor materials.

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