THE CHEMICAL CLASSIFICATION OF IRON METEORITES. I. A STUDY OF IRON METEORITES WITH LOW CONCENTRATIONS OF GALLIUM AND GERMANIUM.
THE CHEMICAL CLASSIFICATION OF IRON METEORITES. I. A STUDY OF IRON METEORITES WITH LOW CONCENTRATIONS OF GALLIUM AND GERMANIUM.
复制标题
铁陨石的化学分类。
DOI：
10.1016/s0016-7037(67)80043-7
复制
发表时间：
1967
影响因子：
5
通讯作者：
J. Wasson
中科院分区：
文献类型：
--
作者：
J. Wasson
测定了34块铁陨石中Ga和Ge的含量。这些陨石之所以被选中，要么是因为它们的Ga或Ge浓度低于以前研究人员的检测限，要么是因为它们的结构和Ni含量与前一类陨石相似。除了3块陨石外，其余陨石都属于以下两类：镍含量大于13%的无球粒陨石，或镍含量小于9.5%的细八面体陨石。在新结果的基础上，有可能解决Gasingle键Ge组IV的Lovering等。（1957）分为两个不同的组，命名为Gasingle bondGe组IVa和IVb，分别有12个和6个成员。其中三颗陨石的镓和锗浓度与第三族陨石相似，而其余的13颗陨石则无法归属于任何已知的Gasingle bondGe族。在Ge对Ga浓度和Ge对Ni浓度的曲线图中可以看到某些差异。这些讨论的多母体假说，也在行星分馏过程。证据进行了讨论，这表明Gasingle bondGe组I，IVa和可能IVb代表完全解决的群体，而其余的群体是复杂的。试图解决后者组的基础上，详细的化学研究提出。
The concentrations of Ga and Ge have been determined in 34 iron meteorites. The meteorites were chosen either because they were found to have Ga or Ge concentrations below the detection limits of previous investigators, or because they were similar in structure and Ni content to meteorites of the former sort. All but 3 of the meteorites belong to one of the following two classes: ataxites with greater than 13% Ni, or fine octahedrites with less than 9·5% Ni. On the basis of the new results it is possible to resolve Gasingle bondGe group IV ofLoveringet al.(1957) into two distinct groups, designated Gasingle bondGe groups IVa and IVb, and having 12 and 6 members respectively. Three meteorites have Ga and Ge concentrations similar to meteorites in Group III, whereas the remaining 13 meteorites cannot be assigned to any of the known Gasingle bondGe groups. Certain regularities are to be seen in plots of Ge vs. Ga concentration and Ge vs. Ni concentration. These are discussed in terms of the multiple parent-body hypothesis and also in terms of planetary fractionation processes. Evidence is discussed which indicates that Gasingle bondGe groups I, IVa and possibly IVb represent fully resolved groups, whereas the remaining groups are complex. An attempt at resolving the latter groups on the basis of detailed chemical studies is proposed.
DOI：
--
发表时间：
2007
期刊：
Lunar and Planetary Science Conference XXXVIII 38
影响因子：
--
作者：
原田 知明;保科 洋介;吉村 英恭;C.Okamoto
通讯作者：
C.Okamoto