2006年南极格罗夫山普通球粒陨石综述  

A SUMMARY ON CLASSIFICATION OF ORDINARY CHONDRITES FROM THE GROVE MOUNTAINS REGION,ANTARCTICA IN 2006

作　　者：李春来[1] 张蕾[2] 刘建忠[1] 邹永廖[1] 欧阳自远[1] 

机构地区：[1]中国科学院国家天文台,北京100012 [2]北京天文馆,北京100044

出　　处：《极地研究》2008年第2期167-176,共10页Chinese Journal of Polar Research

基　　金：国家科技基础条件平台建设项目(2005DKA21406)资助

摘　　要：近年来,在南极格罗夫山地区,我国共收集到9834块南极陨石样品,这些样品目前被保存在中国极地研究中心。2006年,国家天文台对其中100块陨石进行了系统分类和研究,确定陨石的化学群及岩石类型。本文系统介绍和总结了本次分类研究过程及结果。通过光学显微镜观察和电子探针测试,确定其中98块为普通球粒陨石。具体类型如下:3块为非平衡型普通球粒陨石(2块H3、1块L3);其他为平衡型普通球粒陨石。平衡型普通球粒陨石的化学-岩石类型分别为:高铁群(H)有43块(2块H3、12块H4、20块H5和9块H6),低铁群(L)有53块(3块L4、13块L5和37块L6),低铁低金属群(LL)有两块(1块LL4和1块LL6)。9834 meteorites have been collected in Grove Mountains, Antarctica, and they are held in Polar Research Institute of China now. A detailed petrographical and mineral chemical study of 100 samples has been finished by National Astronomical Observatories, Chinese Academy of Sciences in 2006. By optical microscope and electron probe analysis, results of 100 meteorites show that two samples belong to special types, and the others are classified as ordinary chondrites. Three of the 98 chondrites are primitive type 3 chondrites （2 H3 ＆ 1 L3） and the others are equilibrated ordinary chondrites. In H group, there are 41 equilibrated chondrites including 12 H4 chondrites, 20 H5 chondrites and 9 H6 chondrites. For the L group, 3 IA chondrites, 13 L5 chondrites and 37 L6 chondrites are sub-classified, and 2 chondrites of LL group are also further classified into one LL4 chondrite and one LL6 chondrite.

关 键 词：南极 格罗夫山 陨石 分类 普通球粒陨石 

分 类 号：P185.83[天文地球—天文学] S155.1[农业科学—土壤学]