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| Grove Mountains 150357 | |||||||||||||||||||||||||||
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| Basic information | Name: Grove Mountains 150357 This is an OFFICIAL meteorite name. Abbreviation: GRV 150357 Observed fall: No Year found: 2015 Country: Antarctica [Collected by Chinese Antarctic Research Expedition (CARE)] Mass:  11.7 g | ||||||||||||||||||||||||||
| Classification history: |
This is 1 of 103 approved meteorites classified as Lunar. [show all] Search for other: Lunar meteorites | ||||||||||||||||||||||||||
| Comments: | Approved 12 Nov 2022 | ||||||||||||||||||||||||||
| Writeup |
Writeup from MB 111:
Grove Mountains 150357 (GRV 150357) 72°56’9"S, 75°19’1"E Antarctica Find: 2015-12-29 Classification: lunar (polymict breccia) History: During 2015/2016 field season, this sample (665 in total) was collected by the 32nd CHINARE in Grove Mountains, East Antarctica. Physical characteristics: A single stone. The fresh interior exhibits some lighter colored clasts within a dominant black matrix. Petrography: Petrology (Z. Xia, B. Miao, GUT): The polished thin section of this meteorite shows a distinct breccia texture, with many lithic clasts and mineral fragments embedded in the heterogeneous glassy matrix contaning fine-grained minerals. The lithic clasts includes crystalline impact melt, basalt, anorthosite, troctolite, norite/gabbro, symplectite (hedenbergite+fayalite+quartz), etc. Dominant mineral fragments are plagioclase, olivine and pyroxene. The pyroxene fragments with exsolution is common. Accessory phases are ilmenite, chromite, spinel, troilite and quartz. Geochemistry (Z. Xia, B. Miao, GUT): Heterogeneous glassy matrix: Al2O3: 12.5-28.77 wt% (avg. 22.4 wt%), MgO: 7.82-16.39 wt% (avg. 12.1 wt%), FeO:3.79-22.54 wt% (avg.14.3 wt%) (n=15). Plagioclase in basaltic clast: An92.5-94.3 (n=3). Plagioclase in anorthositic clast, An95.2-97.3 (n=7). Olivine fragments: Fo41.4-53.5 (Fe/Mn=77-94, n=13). Low-Ca pyroxene Fs32.7-48.9Wo1.9-14.9 (Fe/Mn=50-64, n=13) with exsolution lamellae of high-Ca?pyroxene Fs19.5-36.6Wo20.6-41.9 (Fe/Mn=45-59, n=9). Symplectite: hedenbergite Fs44.2Wo41.0; fayalite Fs89.1. Classification: Lunar (polymict breccia). Specimens: The main mass and one polished thin section are on deposited at PRIC. | ||||||||||||||||||||||||||
| Data from: MB111 Table 0 Line 0: |
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| Institutions and collections |
PRIC: Polar Research Institute of China, 451 Jinqiao Road, Shanghai 200129, China; Website (institutional address; updated 9 Apr 2013) GUT: College of Earth Sciences, Guilin University of Technology, 12 Jiangan Road, Guilin 541004, China (institutional address; updated 18 Oct 2012) |
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| References: | Published in Meteoritical Bulletin, no. 111, in preparation (2022)
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Geography:
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Statistics: This is 1 of 44248 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||||||||
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