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| Grove Mountains 021525 | |||||||||||||||||
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| Basic information | Name: Grove Mountains 021525 This is an OFFICIAL meteorite name. Abbreviation: GRV 021525 Observed fall: No Year found: 2003 Country: Antarctica [Collected by Chinese Antarctic Research Expedition (CARE)] Mass:  3.87 g | ||||||||||||||||
| Classification history: |
This is 1 of 205 approved meteorites classified as Mesosiderite. [show all] Search for other: Mesosiderites, Metal-rich meteorites | ||||||||||||||||
| Comments: |
Approved 5 Mar 2008 Revised 4 Aug 2008: final writeup | ||||||||||||||||
| Writeup |
Writeup from MB 93:
Grove Mountains 021525 72°57'39''N, 75°14'50''E Grove Mountains, Antarctica Find: 14 January 2003 Mesosiderite 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 an irregular fragment partially covered by black fusion crust. The meteorite weighs 3.87 g. Petrography: (G. Wang and D. Wang, GIGCAS; S. Hu and Y. Lin, IGGCAS). The meteorite contains 17 vol% metal. Most large fragments are orthopyroxene that usually have bright rims. Less abundant fragments are pigeonite and plagioclase with several grains of olivine. Pigeonite fragments show exsolution of augite, and olivine grains have coronal outlines decorated with small grains of chromite. The fine-grained matrix has an ophitic texture, consisting of pyroxenes and plagioclase with minor silica and chromite. Phosphates occur mainly close to metal. Mineral compositions and Geochemistry: (L. Xu and W. Shen, IGGCAS; G. Wang, GIGCAS). Orthopyroxene fragments are very heterogeneous, Fs19.7-55.9Wo1-8, FeO/ MnO = 25; Lamellae of augite (Fs13-31Wo34-46), pigeonite (Fs33-56Wo1-4). Relative homogeneous composition of small pyroxenes in matrix, Fs32-36Wo2-3; plagioclase: An = 84-96 mol%; olivine has a range of Fa = 32-41 mol%, but homogeneous in individual grains; kamacite (Ni = 5.20-6.49 wt%, Co = 0.60-0.81 wt%); (Ni = 37.0- 46.7 wt%). Classification: Mesosiderite; minimally weathered. Type specimens: PRIC holds the main mass and a polished section. | ||||||||||||||||
| Data from: MB93 Table 6 Line 185: |
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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) GIGCAS: Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, China (institutional address) |
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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 40744 approved meteorites from Antarctica (plus 4494 unapproved names) | ||||||||||||||||
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