登录 | 注册 | 中文  | English  | 用时: 0.54s
元数据
高级检索
首页 > 中国极地考察知识库 > 成果信息库 > 已审查 A new Martian meteorite from Antarctica: Grove Mountains (GRV) 020090

A new Martian meteorite from Antarctica: Grove Mountains (GRV) 020090

【标题】A new Martian meteorite from Antarctica: Grove Mountains (GRV) 020090

【Title】A new Martian meteorite from Antarctica: Grove Mountains (GRV) 020090

【作者】 缪秉魁; 欧阳自远; 琚宜太; 王道德; 王桂琴; 林杨挺

【Author】 Miao Bingkui ; Ou Yang Ziyuan ; Ju Yitai ; Wang Daode ; Wang Guiqin ; Lin Yangting

【期刊】地质学报(英文版)

【Journal】ACTA GEOLOGICA SINICA-ENGLISH EDITION

【期刊年份】2004

【卷】30

【期】5

【关键词】 陨星; 辉熔长石; 不含球粒陨石; 火星; 南极洲

【Keywords】 meteorite; lherzolite; shergottite; achondrite; Mars; Antarctica

【摘要】

【Abstract】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.

【基金/项目】 中国科学院知识创新工程重要方向项目(KZCX3-SW-123) ; 我国新发现的火星和灶神星陨石的形成和演化历史

【下载】 PDF(1.0 MB)