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Grove Mountains 99018
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:help 0.23 g
Classification
  history:
NHM Catalogue:  5th Edition  (2000)  Eucrite
Meteoritical Bulletin:  MB 86  (2002)  Eucrite
MetBase:  v. 7.1  (2006)  Eucrite
Recommended:  Eucrite    [explanation]

This is 1 of 432 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Writeuphelp
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:
Date:9 Feb 2000
Mass (g):0.23
Class:Eucrite
Classifier:Y. Lin and B. Miao (GIG), K. Tao, Y. Jun and X. Liu (IGG), H. Wang and C. Lin (NU), and J. Liu and Y. Zhou (NAOC)
Type spec location:PRIC
Main mass:PRIC
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)
Catalogs:
Search for this meteorite in the Chinese meteorite database (CHINARE):   
References: Published in Meteoritical Bulletin, no. 86, MAPS 37, A157-A184 (2002)
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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (73° 5' 56"S, 75° 11' 53"E)
     Recommended::   (73° 5'S, 75° 12'E)
Note: the NHM and MetBase coordinates are 1.7 km apart

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
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