Meteoritical Bulletin: Entry for Grove Mountains 021692

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Grove Mountains 021692

Basic information

Name: Grove Mountains 021692
This is an OFFICIAL meteorite name.
Abbreviation: GRV 021692
Observed fall: No
Year found: 2003
Country: Antarctica [Collected by Chinese Antarctic Research Expedition (CARE)]
Mass: 0.61 g

Classification
history:

Meteoritical Bulletin:	MB 98	(2010)	E
Recommended:			E [explanation]

This is 1 of 5 approved meteorites classified as E. [show all]
Search for other: Enstatite chondrites

Comments:

Approved 23 Dec 2008

Writeup

help

Writeup from MB online:

Grove Mountains 021692 (GRV 021692) 72° 46' 26"S, 75° 20' 50"E

Antarctica

Found: 20 January 2003

Classification: Enstatite chondrite

History: X. Qin recovered this stone on the fourth moraine in Grove Mountains, Antarctica. It weighs 0.61 g and has an irregular shape. Part of a black fusion crust remains.

Petrography: (L. Wang, A. Zhang, PMO) The stone contains abundant silicate chondrules and their fragments, up to 0.8 mm in size. Chondrules and their fragments consist of dominant pyroxene with minor olivine, plagioclase, alkaline feldspar, FeNi metal, and troilite. Nearly all metal and sulfide were extensively altered. Some irregular schreibersite, oldhamite, daubréelite, and perryite grains occur in matrix.

Geochemistry: (L. Wang, A. Zhang, PMO) Low-Ca pyroxene (En_84.6-99.5, average=En_96.7±3.9; Fs_0.5-13.6, average=Fs_2.4±2.7; Wo_0-4.3, average=Wo_0.9±1.4) grains contain some Al₂O₃ (up to 12.5 wt%). Olivine grains are forsteritic (Fa_0.4-1.8, average=Fa_0.8±0.5).

Classification: Enstatite Chondrite (EC)

Specimens: All of the sample mass and a polished thin section are on deposit at PRIC.

Data from:
  MB98
  Table 2
  Line 540:

Mass (g):	0.61
Class:	E
Fayalite (mol%):	2.4 ± 2.7
Ferrosilite (mol%):	0.8 ± 0.5

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)

Catalogs:

Search for this meteorite in the Chinese meteorite database (CHINARE):

References:

Published in Meteoritical Bulletin, no. 98, MAPS 45, 1530-1551 (2010)

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Geography:

Antarctica

Antarctica

Coordinates:
Recommended::	(72° 46' 26"S, 75° 20' 50"E)

Statistics:
This is 1 of 44048 approved meteorites from Antarctica (plus 3802 unapproved names)

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