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| 1 | A New Martian Meteorite from Antarctica:Grove Mountains (GRV) 020090显示文摘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. | MIAOBingkui OUYANGZiyuan WANGDaode JUYitai WANGGuiqin LINYangting | 2004 | Acta Geologica Sinica(English Edition)2004，78，5： | 24 |
| 2 | Ca-, Al-rich Inclusions in Three New Carbonaceous Chondrites from the Grove Mountains, Antarctica: New Evidence for a Similar Origin of the Objects in Various Groups of Chondrites显示文摘Three new carbonaceous chondrites (GRV 020025, 021579 and 022459) collected from the Grove Mountains(GRV), Antarctica, have been classified as the CM2, CO3 and CV3 chondrites, respectively. A total of 27 Ca- and Al-rich inclusions have been found in the three meteorites, which are the earliest assemblages formed in the solar nebula. Most of the inclusions are intensively altered, with abundant phyllosilicates in the inclusions from GRV 020025 and FeO enrichment of spinel in those from GRV 022459. Except for one spinel-spherule in each of GRV 020025 and 021579, all the inclusions can be classified as Type A-like or spinel-pyroxene-rich inclusions, and they probably represent the continuum of solar nebular condensation. In addition, most of the inclusions in these meteorites share much similarity in both petrography and mineral chemistry, suggesting a similar origin of Ca-Al-rich inclusions in various chondrites. | DAIDeqiu LINYangting MIAOBingkui SHENGWenjie WANGDaode | 2004 | Acta Geologica Sinica(English Edition)2004，78，5： | 19 |
| 3 | A Tiny Piece of Basalt Probably from Asteroid 4 Vesta显示文摘Grove Mountains (GRV) 99018 is a new eucrite (0.23 g), consisting mainly of pyroxene (50.5 vol%) and plagioclase (37.2 vol%) with minor silica minerals (7.0 vol%) and opaque minerals (5.2 vol%). It was intensely shocked,leading to partial melting, formation of abundant tiny inclusions in pyroxenes and plagioclase, and heavy brecciation.Exsolution of most pyroxenes (1-3 μm in width of the lamellae), recrystallization of the shock-induced melt pockets and veins (5-20 μm in size), and homogeneous compositions of pyroxenes of various occurrences suggest the intense thermal metamorphism of GRV 99018 in the asteroidal body Vesta. This new eucrite will bring additional constraints on the chemical composition and multi-stage thermal and shock history of Vesta. | LINYangting WANGDaode WANGGuiqing | 2004 | Acta Geologica Sinica(English Edition)2004，78，5： | 17 |
| 4 | Grove Mountains(GRV)99027:A new Martian meteorite显示文摘We report the petrography, mineral chemistry and oxygen isotopic composition of GRV 99027, a new Mar-tian meteorite recently collected during the 16th Chinese Antarctic Research Expedition. This meteorite consists of two textural regions. The interstitial region is characterized by the presence of plagioclase and phosphate, and higher FeO contents of olivine and orthopyroxene, in comparison with the poikilitic region. All of the observations are similar to the three known Martian lherzolites. We classify GRV 99027 as the fourth sample of Martian lherzolite. | LINYangting WANGDaode MIAOBingkui OUYANGZiyuan LIUXiaohan JUYitai | 2003 | Chinese Science Bulletin2003，48，16： | 11 |
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