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26 AI LOSSES FROM WEATHERED CHONDRITES
Author(s) -
Herzog G. F.,
Cressy P. J.
Publication year - 1976
Publication title -
meteoritics
Language(s) - English
Resource type - Journals
eISSN - 1945-5100
pISSN - 0026-1114
DOI - 10.1111/j.1945-5100.1976.tb00315.x
Subject(s) - chondrite , weathering , saturation (graph theory) , geology , analytical chemistry (journal) , mineralogy , radiogenic nuclide , chemistry , geochemistry , physics , meteorite , astrobiology , mathematics , combinatorics , environmental chemistry , mantle (geology)
He, Ne and Ar have been measured in 8 samples of Dalgety Downs (DD) and 5 samples of Ness County, 1894 (NC). 26 Al, K, Th and U have been measured in 4 samples of DD and the chondrites Etter, Bledsoe, Seminole #2 and Zerga. Weathering probably explains the correlation between 26 Al and 21 Ne in DD, the independence of 3 He/ 21 Ne and 22 Ne/ 21 Ne in DD and NC and the > 2σ reduction of all 26 Al contents from calculated saturation values.