A New Martian Meteorite from Antarctica:Grove Mountains (GRV) 020090

被引：0

作者：

MIAO Bingkui OUYANG Ziyuan WANG Daode JU YitaiWANG Guiqin and LIN Yangting Institute of Geology and Geophysics Chinese Academy of Sciences Beijing ^{[100029
]}

Department of Resources and Environmental Engineering Guilin Institute of TechnologyGuilin Guangxi National Astronomical Observatories Chinese Academy of Sciences Beijing Guangzhou Institute of Geochemistry Chinese Academy of SciencesGuangzhou Guangdong The Second Bureau of China Exploration Engineering Bureau Euzhou Fujian ^{[541004
,100012
,510640
,350001
]}

机构：

来源：

ActaGeologicaSinica(EnglishEdition) | 2004年 / 05期

关键词：

meteorite; lherzolite; shergottite; achondrite; Mars; Antarctica;

D O I：

暂无

中图分类号：

P185 [行星、卫星、彗星、流星、陨星];

学科分类号：

070401 ;

摘要：

<正>Reported in this paper are the petrology and mineral chemistry of GRV 020090, the second Martian meteorite collected from the Grove Mountains, Antarctica. This meteorite, with a mass of 7.54 g, is completely covered by a black and glazy fusion crust. It has two distinct textural regions. The interstitial region is composed of euhedral grains of olivine, pigeonite, and anhedral interstitial maskelynite, with minor chromite, augite, phosphates and troilite. The poikilitic region consists of three clasts of pyroxenes, each of which has a pigeonite core and an augite rim. A few grains of subhedral to rounded olivine and euhedral chromite are enclosed in the pyroxene oikocrysts. GRV 020090 is classified as a new member of lherzolitic shergottites based on the modal composition and mineral chemistry. This work will shed light on the composition of Martian crust and magmatism on the Mars.

引用

页码：1034 / 1041

页数：8