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| Grove Mountains 050179 | |||||||||||||||||
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| Basic information | Name: Grove Mountains 050179 This is an OFFICIAL meteorite name. Abbreviation: GRV 050179 Observed fall: No Year found: 2006 Country: Antarctica [Collected by Chinese Antarctic Research Expedition (CARE)] Mass:  5 g | ||||||||||||||||
| Classification history: |
This is 1 of 546 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 4 Mar 2008 Revised 4 Aug 2008: final writeup | ||||||||||||||||
| Writeup |
Writeup from MB 93:
Grove Mountains 050179 72°57'32''S, 75°13'24''E Grove Mountains, Antarctica Find: 7 January 2006 Carbonaceous chondrite (CM2) History and Physical characteristics: The meteorite was found on blue ice west to the middle segment of the Gale Escarpment in Grove Mountains by J. Li. It is a fragment but most surface covered by black fusion crust. Small light gray colored chondrules in dark matrix can be noticed. The meteorite weighs 5.03 g. Petrography: (Y. Lin, S. Hu, and L. Feng, IGGCAS). Chondrules are small, with diameter of <300 μm, except for a few large (500-1000 μm in diameter). Almost all chondrules have accretionary rims, and chondrules/matrix ratio in volume is about 6. Aqueous alteration is highly developed in both chondrules and matrix, producing PCP-rich objects. Only a few large fragments of olivine remain. Minor Ca-carbonates occur as nodules. Mineral compositions and Geochemistry: (S. Hu, T. Liu, and L. Feng, IGGCAS). Low Ca-pyroxene contains low FeO, (Fs0.8-8.9Wo0.8-4.1), olivine is highly heterogeneous within and among chondrules, with Fa1.0-31. Minor phases are kamacite, sulfides, chromite, and Ca carbonates. Classification: Carbonaceous chondrite (CM2). Type specimens: PRIC holds the main mass and a polished section. | ||||||||||||||||
| Data from: MB93 Table 6 Line 434: |
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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) IGGCAS: Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China (institutional address; updated 16 Oct 2011) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 93, MAPS 43, 571-632 (2008)
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Geography:
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Statistics: This is 1 of 40753 approved meteorites from Antarctica (plus 4494 unapproved names) | ||||||||||||||||
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