Petrography, Mineral Chemistry of 6 New Unequilibrated Ordinary Chondrites Collected from the <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:PlaceType w:st="on">Grove</st1:PlaceType> <st1:PlaceType w:st="on">Mountains</st1:PlaceType>, <st1:place w:st="on">Antarctica</st1:place> <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p>

Petrography, Mineral Chemistry of 6 New Unequilibrated Ordinary Chondrites Collected from the oft-com:office:smarttags" />Grove Mountains, Antarctica oft-com:office:office" />

详细信息

责任者：Dai Deqiu (Institute of Geology ; Hunan University of Science and Technology ; Xiangtan 411201 ; China) ; Lin Yangting
刊名：Acta Mineralogica Sinica
出版年：2009
卷期：29(3)
关键词：陨石 ; meteorites ; 南极洲 ; Antarctica
页码：p.405-412
图表：3 illus., 3 tables, 20 refs.
分类号：0100
issnNo：ISSN1000-4734
isbnNo：CN52-1045/P

摘要

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The petrography and mineral chemistry of 6 unequilibrated ordinary chondrites collected from the oft-com:office:smarttags" />Grove Mountains, Antarctica, were studied. All meteorites show highly primitive petrography and mineral chemistry, as indicated by very shape-outlined chondrules, almost opaque fine-grained matrix, zoned grains of olivine and low-Ca pyroxene, and wide compositional ranges among grains. According to their petrography and mineral chemistry data, these meteorites are classified as 3 H3 and 3 L3 chondrites. Based on the relationship between the Percent Mean Deviation (PMD) of Fa of olivine and subtype of unequilibrated ordinary chondrites, they are subdivided with GRV 020016 as H3.7, GRV 020162 as H3.5, GRV 020166 as H3.4, GRV 020106 as L3.7, GRV 020164 as L3.7, and GRV 020165 as L3.7.

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