登录 | 注册

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

上传时间:2016-07-06 17:40

【发表年份】2004

【作  者】MIA0 Bingkui, OUYANG Ziyuan, WANG Daode, JU Yitai,WANG Guiqin, and LIN Yangting

【提交单位】中科院地质与地球物理研究所

【摘  要】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.

【关键词 】 meteorite, lherzolite, shergottite, achondrite, Mars, Antarctica

原文下载
原文预览
版权所有 © 2007-2019 All Rights Reserved.    |    中国极地研究中心 www.pric.org.cn    |    极地标本资源共享平台 birds.chinare.org.cn
地址:上海浦东金桥路451号    |    联系电话:021-58717576    |    邮政编码:200136    |    邮箱:connect@pric.org.cn
技术支持:上海橙智信息科技有限公司
沪ICP备05021913号