地质学报2011，Vol.85Issue(1)：129-135,7.
南极格罗夫山陨石CRV 020043—一个特殊的E/H过渡型球粒陨石
GRV 020043-A Special Transition Chondrite Between E and H Group
摘要
Abstract
Grove Mountains (GRV) 020043 is a special chondrite, which has the same mineral assemblage as ordinary chondrite,but it has its own mineral compositions beyond those of the ordinary chondrites. The stone is composed of Low-Ca pyroxene (40 vol％), olivine (24vo1％), diopside (8 vol％), plagioclase (10vol％) ,troilite(4 vol％), Fe-Ni alloy (14 vol％), and trace of chromite and apatite. The silicates have homogeneous compositions, e. g. olivine (Fa10.4-12.4, average Fa11.0 ) and Low-Ca pyroxene (Fs10.1-11.6,average Fs10.9 ) , diopside ( Wo46.1-47.1 En49.0-49.2 Fs3.8-4.4 , average Wo46.6 En49.3 Fs4.0 ), plgioclase ( Ab55.7-72.5 Or2.1-5.0 An24.0-42.1, average Ab67.6 Or3.4 An29.0 ). Some chondrules in this meteorite are well defined with sharp edges, with the chondrules aboundence of 37 vol％. The matrix of the meteorite is moderately recrystallized. Its petrologic type is 4. Based on its mineral compositions, olivine model abundance and oxidation intensity of GRV 020043 are restricted between E and H groups. The chondrite is classified classed as a transition chondrite between E and H group.关键词
南极/格罗夫山/南极陨石/普通球粒陨石/E/H过渡型球粒陨石Key words
Antarctica/ the Grove Mountains/ Antarctic meteorite/ ordinary chondrite/ E/H chondrite引用本文复制引用
李世杰,王世杰,刘燊,李雄耀,唐红,李芃..南极格罗夫山陨石CRV 020043—一个特殊的E/H过渡型球粒陨石[J].地质学报,2011,85(1):129-135,7.基金项目
本文由中国科学院知识创新工程重要方向项目(编号 kzcx2-yw-110)、国家自然科学基金项目(编号 40803019)和科技部国家科技基础平台建设项目(编号 2005DKA21406-1)资助的成果. （编号 kzcx2-yw-110）
