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Grove Mountains 021729
Basic information Name: Grove Mountains 021729
     This is an OFFICIAL meteorite name.
Abbreviation: GRV 021729
Observed fall: No
Year found: 2003
Country: Antarctica [Collected by Chinese Antarctic Research Expedition (CARE)]
Mass:help 2.97 g
Classification
  history:
Meteoritical Bulletin:  MB 93  (2008)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 514 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 5 Mar 2008
Revised 4 Aug 2008: final writeup
Writeuphelp
Writeup from MB 93:

Grove Mountains 021729                             72°47'23''S, 75°17'25''E

Grove Mountains, Antarctica

Find: 20 January 2003

Achondrite (ureilite)

History and Physical characteristics: A 2.97 g, mostly black fusion encrusted stone was recovered from a moraine by J. Li.

Petrography: (A. Zhang, PMO; H. Wang, NU) It shows a cumulate texture of coarse-grained olivine and pyroxene (up to 1.8 mm in length). Triple junctions with an angle of 120° are common among coarse-grained silicates. Grain boundaries between olivine and pyroxene are filled with fine-grained graphite and limonite. Olivine has reduced rims composed of fine-grained forsterite and Ni-poor metal, which also occur along fractures within olivine grains. Some of thegraphite veins intrude into olivine and pyroxene crystals as a plate.

Mineral compositions and Geochemistry: (A. Zhang, PMO; H. Wang, NU) Olivine varies in composition from Fa2.7 to Fa23.1 with an average of Fa12.9±7.6. The olivine core has a composition of Fa20.8. Pyroxene also has variable composition (Fs3.9-19.7, average = Fs14.9±5.4; Wo9.4-30.3, average = Wo12.5±5.3). The pyroxene core has a composition of Fs19.1Wo10.8.

Classification: Achondrite (ureilite).

Type specimens: PRIC holds the main mass and a polished section.

Data from:
  MB93
  Table 6
  Line 244:
Date:20-Jan-2003
Latitude:72°47'23"S
Longitude:75°17'25"E
Mass (g):2.97
Pieces:1
Class:Ureilite
Fayalite (mol%):2.7-23.1
Ferrosilite (mol%):3.9-19.7
Wollastonite (mol%):9.4-30.3
Classifier:PMO
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)
PMO: Purple Mountain Observatory, Nanjing, China (institutional address; updated 16 Dec 2011)
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. 93, MAPS 43, 571-632 (2008)
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Geography:

Antarctica
Coordinates:
     Recommended::   (72° 47' 23"S, 75° 17' 25"E)

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