1979
DOI: 10.3133/pp440b1
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Cosmochemistry; Part 1, Meteorites

Abstract: ________ Introduction __________ ____________ Historical background ___ ____________ Phase composition of meteorites _ ____________ Classification of meteorites _______ ___________ Classification of chondrites _______________________ Classification of achondrites and stony-irons _ Classification of iron meteorites __ .____________ Chemical fractionations in chondrites _____________ The geochemical behavior of elements in meteorites Location of minor and trace elements in meteorites Hydrogen ______ .

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Cited by 59 publications
(28 citation statements)
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“…This Cl content is about an order of magnitude higher compared to the ordinary chondrite range of 15-177 ppm (Garrison et al 2000). Thus, we find that compared to average H chondrites (Mason 1979), Devgaon is significantly enriched in Cl and Br and depleted in I. In Table 7, the ratios of I/Cl and Br/Cl of Devgaon are compared with Kesen (H4) (a normal H chondrite), Zag (H3) (a chondrite having halites), and CI chondrites.…”
Section: Halogen Contents and Neutron Fluencementioning
confidence: 50%
See 1 more Smart Citation
“…This Cl content is about an order of magnitude higher compared to the ordinary chondrite range of 15-177 ppm (Garrison et al 2000). Thus, we find that compared to average H chondrites (Mason 1979), Devgaon is significantly enriched in Cl and Br and depleted in I. In Table 7, the ratios of I/Cl and Br/Cl of Devgaon are compared with Kesen (H4) (a normal H chondrite), Zag (H3) (a chondrite having halites), and CI chondrites.…”
Section: Halogen Contents and Neutron Fluencementioning
confidence: 50%
“…To estimate the amount of 36 Ar n , we use 82 Kr n . Assuming the (Cl/Br) atom ratio in Devgaon to be 700, the same as in average H chondrites (Mason 1979), and using (n, γ) cross sections from Göbel et al (1982), we calculate 36 Ar n = 3.58 × 10 −8 ccSTP/g.…”
Section: Nucleogenic Componentmentioning
confidence: 99%
“…Although these experiments provide interesting results, it should be kept in mind that the amount of schreibersite reaching the Earth today is low. Schreibersite occurs only in iron meteorites as macroscopic inclusions, making up 0.5-1.3% of sample volume [70] . Metallic meteorites comprise not more than 7.4% of the total meteorite flux.…”
Section: A Cellular Origin Of Lifementioning
confidence: 99%
“…Hence, normalization of the saturated activity observed to the oxygen content works well. We estimated the saturated activity for a given class of meteorite by normalizing the mean value of the 14 C content of Bruderheim (51.1 dpm/kg) to the oxygen content of the meteorite determined from bulk chemistry or from average compositions (Mason 1979). The scatter in measurements on saturated falls suggests that an uncertainty of ±15% should be included in estimates of the terrestrial age to account for uncompensated shielding or depth effects, as well as experimental uncertainty (Jull et al 1993a).…”
Section: Meteorite Studies and Terrestrial Agesmentioning
confidence: 99%