The Richfield LL3 chondrite

Details The Richfield LL3 chondrite The Richfield LL3 chondrite

Oct 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996m%26ps...31..925r&link_type=abstract

Meteoritics, vol. 31, pages 925-927.

Physics

2

Scientific paper

Richfield is a moderately shocked (shock stage S4) LL3.7 genomict breccia find consisting mainly of light-colored chondrule-rich clasts and dark clasts exhibiting significant silicate darkening; a few impact-melt-rock clasts and LL5 chondrite clasts also occur. The cosmic-ray exposure age of 14.5 Ma is indistinguishable from the main exposure peak for LL chondrites (15 Ma). Although the exposure ages indicate little He loss, the gas-retention ages indicate high gas losses that must have occurred prior to or during ejection from the LL parent body.

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