南极格罗夫山普通球粒陨石的岩石学和矿物学特征及分类

南极格罗夫山普通球粒陨石的岩石学和矿物学特征及分类

梁英，王鹤年，季峻峰

南京大学地球科学系、内生金属矿床成矿机制研究国家重点实验室,南京 210093

收稿日期:2006-03-20 修回日期:2006-03-20 出版日期:2006-03-20 发布日期:2006-03-20

Petrology-Mineralogy and Classification of Eleven Ordinary Chondritesfrom the Grove Mountains in Antarctica

LIANG Ying, WANG He-nian, JI Jun-feng

State Key Laboratory for Mineral Deposits Research, Department of Earth Sciences, Nanjing University, Nanjing 210093, China

Received:2006-03-20 Revised:2006-03-20 Online:2006-03-20 Published:2006-03-20

摘要/Abstract

摘要： 从南极格罗夫山地区回收的11个陨石均具有球粒结构，确定为普通球粒陨石。研究了这些陨石的岩相学特征和矿物化学特征，进行了化学群-岩石类型的划分。结果表明，在所研究的11个普通球粒陨石中，4个为H群，6个为L群，1个为LL群。其中GRV 020010（LL3）和GRV 021481（H3）的两个陨石是稀少的、在我国尚末见过的非平衡普通球粒陨石。进行了陨石磁化率的测试，初步探讨了磁化率在陨石化学群分类中的作用。

Abstract: Analyses on eleven meteorites recovered from the Grove Mountains in Antarctica indicate：all themeteorites have chondritic textures and are identified as ordinary chondrites.In this paper，their petrography and mineralogical chemistry are studied，and their chemical groups-petrologic types are classified，including four Hchondrites，six L chondrites，and one LL chondrites．Especially GRV 020010(LL3)and GRV 021481(H3)are unequilibrated ordinary chondrites，and rare and vacant unequilibrated meteorites in Chinese meteoritic reserves．Moreover，their magnetic susceptibility is measured，and the role of magnetic susceptibility in the classification of chemical groups of meteorites is also discussed tentatively．

梁英，王鹤年，季峻峰. 南极格罗夫山普通球粒陨石的岩石学和矿物学特征及分类[J]. J4.

LIANG Ying, WANG He-nian, JI Jun-feng. Petrology-Mineralogy and Classification of Eleven Ordinary Chondritesfrom the Grove Mountains in Antarctica[J]. J4.