Mn-Cr isotopic systematics of Chainpur chondrules and bulk ordinary chondrites

Bibcode
1994LPICo.844...28N
Nyquist, L.; Lindstrom, D.; Wiesmann, H.; Bansal, B.; Shih, C.-Y.; Mittlefehldt, D.; Martinez, R.; Wentworth, S.
Bibliographical reference

In Lunar and Planetary Inst., Papers Presented to the Conference on Chondrules and the Protoplanetary Disk p 28-30 (SEE N95-19289 05-90)

Advertised on:
0
1994
Number of authors
8
IAC number of authors
0
Citations
0
Refereed citations
0
Description
We report on ongoing study of the Mn-Cr systematics of individual Chainpur (LL3.4) chondrules and compare the results to those for bulk ordinary chondrites. Twenty-eight chondrules were surveyed for abundances of Mn, Cr, Na, Fe, Sc, Hf, Ir, and Zn by INAA. Twelve were chosen for SEM/EDX and high-precision Cr-isotopic studies on the basis of LL-chondrite-normalized Mn(LL), Sc(LL), (Mn/Fe)(LL), and (Sc/Fe)(LL) as well as their Mn/Cr ratios. Classification into textural types follows from SEM/EDX examination of interior surfaces.
Type
Non-refereed
Chondrites

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