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26AI LOSSES FROM WEATHERED CHONDRITES |
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| Authors: | G F Herzog P J Cressy |
| Abstract: | He, Ne and Ar have been measured in 8 samples of Dalgety Downs (DD) and 5 samples of Ness County, 1894 (NC). 26Al, 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 26Al and 21Ne in DD, the independence of 3He/21Ne and 22Ne/21Ne in DD and NC and the > 2σ reduction of all 26Al contents from calculated saturation values. |
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