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| Grove Mountains 050384 | |||||||||||||||||||
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| Basic information | Name: Grove Mountains 050384 This is an OFFICIAL meteorite name. Abbreviation: GRV 050384 Observed fall: No Year found: 2006 Country: Antarctica [Collected by Chinese Antarctic Research Expedition (CARE)] Mass:  0.76 g | ||||||||||||||||||
| Classification history: |
This is 1 of 636 approved meteorites classified as CM2. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites | ||||||||||||||||||
| Comments: | Approved 23 Dec 2008 | ||||||||||||||||||
| Writeup |
Writeup from MB online:
Grove Mountains 050384 (GRV 050384) 72° 53' 17"S, 75° 12' 21"E Antarctica Found: 8 January 2006 Classification: Carbonaceous chondrite (CM2) History: The meteorite was found on blue ice west of the middle segment of Gale Escarpment in Grove Mountains by Y. Lin. The hand specimen has a kidney-like shape mostly covered by a black fusion crust. The meteorite weighs 0.76 g. Petrography: (C. Li and G. Zhang, NAOC; A. Rubin, UCLA) The thin section displays a chondritic texture, with chondrules’ sizes ranging from 30 to 450 μm (mean value on about 30 chondrules = 90 μm). Aqueous alteration is highly developed in both chondrules and matrix. Hydrated phases, including Fe-rich serpentine and tochilinite (PCPs), are ubiquitous within the matrix. Most olivines in chondrules or fragments show a pronounced compositional zoning with Mg-rich cores and Fe-rich rims. The minor phases are kamacite, taenite, troilite and rare pentlandite. Refractory inclusions are rare and consist of anorthite and forsterite. Some grains of Ca carbonate are present in the matrix. Geochemistry: (G. Zhang, C. Li, Z. Liu and Z. Ouyang, NAOC) Olivine composition in Chondrules or fragments is variable (Fa0.6-88.7, mean Fa31.2, n=44). Low-Ca pyroxene is predominant (En70.3-94.1, mean En74.7, Fs5.3-29.1, mean Fs23.7, Wo0.5-2.3, mean Wo1.7, n=23). Classification: Carbonaceous chondrite (CM2) Specimens: All of the sample mass and a polished thin section are on deposit at PRIC. | ||||||||||||||||||
| Data from: MB95 Table 5 Line 446: |
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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) UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011) NAOC: National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China (institutional address) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 95, MAPS 44, 429-462 (2009)
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Geography:
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Statistics: This is 1 of 44543 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||
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| Also see: |
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| Revision history: |
This lists important revisions made to data for this record.
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