Noble Gases Released by Crushing from Happy Canyon E-Chondrite

Details Noble Gases Released by Crushing from Happy Canyon E-Chondrite Noble Gases Released by Crushing from Happy Canyon E-Chondrite

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27.1303t&link_type=abstract

Lunar and Planetary Science, volume 27, page 1303

Computer Science

Crush-Release, Fractionation, Gases: Noble, Happy Canyon, Microbubbles

Scientific paper

The Happy Canyon (HC) enstatite (E-) chondrite is an impact-melt breccia formed probably from the EL-chondrite parent body. We analyzed it (weighing 0.310 g) for crush-released noble gases. Considerable amounts of trapped Ar, Kr and Xe, and radiogenic 129Xe were released. Twelve percent of bulk Xe appeared by triplicate steps of crushing; one step of crushing consists of 100x pounding. The amounts of gases released at each step of crushing are essentially constant, suggesting that greater portions of trapped gases could be released by more extensive crushing. The isotopic ratio of Xe is approximately solar except for 129Xe. The 129Xe/132Xe ratio is 3.8, being constant at each step. Elemental ratios are largely fractionated compared to the bulk composition: 36Ar/84Kr/132Xe = 31.9/0.68/1.

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