The Distribution of Elements in the Metal Phase of Some Chinese Ordinary Chondrites
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摘要: 本文用仪器中子活化分析法测定了我国不同化学群的吉林(H5),信阳(H5)、肇东(L5)、广饶(L6-5)和东台(LL6)等普通球粒陨石金属相的Fe、Ni、Co、Cu、Cr、Mn、Ga、Ge、Ir、Au和As含量.每个陨石的金属相按粒径分为>20目.20—40目.<40目等.根据这些结果,讨论了元素的分布规律和分馏趋势以及决定金属相组成的作用过程.Abstract: The concentrations of Fe, Ni, Co, Cu, Cr, Mn, Ga, Ge, Ir, Au and As in the metal phases of Jinlin (H3), Xinyang (H5), Zhaodong (L5), Guangrao (L6-5) and Dongtai (LL6) ordinary chondrites in China are determined by instrumental neutron activation analysis, For each meteorite various metallic fractions were analyzed: <20 mesh, 20 -40 mesh, >40 mesh and so on. In terms of these results, the elemental distribution and fractional trends and the processes determining the composition of the metal phase are discussed.
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