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Grove Mountains 050191
Basic information Name: Grove Mountains 050191
     This is an OFFICIAL meteorite name.
Abbreviation: GRV 050191
Observed fall: No
Year found: 2006
Country: Antarctica [Collected by Chinese Antarctic Research Expedition (CARE)]
Mass:help 8 g
Recommended:  LL3    [explanation]

This is 1 of 377 approved meteorites classified as LL3.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 23 Nov 2021
Writeup from MB 110:

Grove Mountains 050191 (GRV 050191)        72°58’30.3"S, 75°16’12.6"E


Find: 7 Jan 2006

Classification: Ordinary chondrite (LL3)

History: During 2005/2006 field season, 5354 meteorite samples have been selected by CHINARE in Grove Mountains, East Antarctica.

Physical characteristics: This meteorite weighs 8 g, the edges and corners are obvious, has a fusion crust shell.

Petrography: The meteorite shows a chondritic texture. The amount of chondrules and their fragments is up to about 75 vol.%. Their sizes vary from 0.1 mm to 2 mm and they are well delineated. They have barred olivine, porphyritic, and cryptocrystalline textures, with annular bands of olivine; most of the mineral annular bands are magnesium-rich in the core. In addition, the crystals of these minerals sometimes show evident zonation. Olivine and low-Ca-pyroxene are the main minerals in fine-grained matrix. All petrographic features indicate a petrological type of 3. Undulatory extinction and irregular fractures in olivine reveal a shock stage of S2. The Fa value indicates that this meteorite belongs to LL group, but the measured amount of metal/sulfide is anomalously high, 18 vol%; certain assignment of group should await further investigation.

Geochemistry: Olivine Fa28.16±2.41, range Fa24.28-31.31. Pyroxene Fs6.82±3.66, range Fs1.97-14.04.

Specimens: The main mass and one thin section are on deposited at PRIC.

Data from:
  Table 0
  Line 0:
Origin or pseudonym:ice field
Date:7 Jan 2006
Mass (g):8
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):28.16±2.41 (n=15)
Ferrosilite (mol%):6.82±3.66 (n=15)
Classifier:Z. Xia, B. Miao, G. Chen, Y. Zhang, E. He, B. Si, H. Liu, X. Wang, T. Zhou, GUT
Type spec mass (g):8.00
Type spec location:PRIC
Main mass:PRIC
Comments:Submitted by Bingkui Miao
   and collections
PRIC: Polar Research Institute of China, 451 Jinqiao Road, Shanghai 200129, China; Website (institutional address; updated 9 Apr 2013)
GUT: College of Earth Sciences, Guilin University of Technology, 12 Jiangan Road, Guilin 541004, China (institutional address; updated 18 Oct 2012)
Search for this meteorite in the Chinese meteorite database (CHINARE):   
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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     Recommended::   (72° 58' 30"S, 75° 16' 13"E)

     This is 1 of 41908 approved meteorites from Antarctica (plus 3802 unapproved names)
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