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Grove Mountains 99018 | |||||||||||||||||
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Basic information | Name: Grove Mountains 99018 This is an OFFICIAL meteorite name. Abbreviation: GRV 99018 Observed fall: No Year found: 2000 Country: Antarctica [Collected by Chinese Antarctic Research Expedition (CARE)] Mass: 0.23 g | ||||||||||||||||
Classification history: |
This is 1 of 598 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||
Writeup |
Writeup from MB 86:
Grove Mountains 99018 Antarctica Found 2000 February 9 Achondrite (eucrite) The smallest stone (0.23 g) collected from blue ice in the Grove Mountains, Antarctica. It is a fragment. The broken surface is fresh, with most of other surface covered by fusion crust. Classification and mineralogy (Lin and B. Miao, GIG; K. Tao, Y. Jun and X. Liu, IGG): it is a mono-breccia, consisting of converted pigeonite (50.5 vol%) and plagioclase (37.2 vol%) with minor SiO2 (7.0 vol%) and opaque minerals (5.2 vol%). All grains of the pigeonite have exsolved lamellae of augite (En29–32Fs25–31Wo37–45) and hypersthene (En36–38Fs55–62Wo1–3). The FeO/MnO (wt%) ratio of the pyroxenes is (28 ± 2). Plagioclase is anorthitic (An88–91). Fracturing and undulose extinction in silicates is common, and plagioclase is deformed. Shock stage S3, weathering grade W1. The meteorite is curated at PRIC. | ||||||||||||||||
Data from: MB86 Table 1 Line 18: |
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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) GIG: Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China (institutional address; updated 27 Feb 2011) IGG: Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China (institutional address; updated 16 Oct 2011) NAOC: National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China (institutional address) NU: School of Earth Sciences and Engineering, Nanjing University, #163 Xianlin Avenue, Nanjing 210023, China, China (institutional address; updated 18 Jul 2015) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 86, MAPS 37, A157-A184 (2002)
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Geography: |
Statistics: This is 1 of 44400 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||
Proximity search: | |||||||||||||||||
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Revision history: |
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