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Grove Mountains 052483
Basic information Name: Grove Mountains 052483
     This is an OFFICIAL meteorite name.
Abbreviation: GRV 052483
Observed fall: No
Year found: 2006
Country: Antarctica [Collected by Chinese Antarctic Research Expedition (CARE)]
Mass:help 162.8 g
Classification
  history:
Meteoritical Bulletin:  MB 95  (2009)  L-related impact-melt rock
Recommended:  L-imp melt    [explanation]

This is 1 of 30 approved meteorites classified as L-imp melt.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 23 Dec 2008
Writeuphelp
Writeup from MB 95:

Grove Mountains 052483     72°46′47′′S, 75°18′58′′E

Grove Mountains, Antarctica

Find: 17 January 2006

Ordinary chondrite (L-related impact-melt rock)

History and physical characteristics: A stone of 162.84 g was recovered on blue ice by J. Hu during the 22nd Chinese Antarctic Research Exploration in Grove Mountains, Antarctica. The hand specimen exhibits an irregular shape mostly covered by a brown fusion crust.

Petrography (C. Li and G. Zhang, NAOC; A. Rubin, UCLA): In thin section, the sample shows a recrystallization texture. Most euhedral to subhedral olivine crystals are set in a mesostasis of fine-grained olivine, pyroxene, and tiny spheres of Ni, Fe-rich metal and sulfides. The dominant silicate phases are olivine, orthopyroxene, plagioclase and rare clinopyroxene. Metal and sulfides are FeNi metal (kamacite, taenite) and troilite. Minor phases are chromite and apatite. Some impact-melt veins are also present. The texture is not particularly chondritic and chondrules are not observed.

Mineral compositions and geochemistry: (G. Zhang, C. Li, Z. Liu and Z. Ouyang, NAOC) Most Olivine compositions in olivine crystals or fine-grained matrix is homogeneous (Fa24.7, n = 13). Low-Ca pyroxene are dominantly bronzite (Fs21.1 Wo1.5; n = 18).

Classification: Ordinary chondrite (L-related impact-melt rock), W1.

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

Data from:
  MB95
  Table 5
  Line 596:
Date:1/17/2006
Latitude:72°46'47"S
Longitude:75°18'58"E
Mass (g):162.84
Pieces:1
Class:L-related impact-melt rock
Weathering grade:W1
Fayalite (mol%):24.7
Ferrosilite (mol%):21.1
Wollastonite (mol%):1.5
Classifier:NAOC and UCLA
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)
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
NAOC: National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China (institutional address)
Catalogs:
Search for this meteorite in the Chinese meteorite database (CHINARE):   
References: Published in Meteoritical Bulletin, no. 95, MAPS 44, 429-462 (2009)
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Geography:

Antarctica
Coordinates:
     Recommended::   (72° 46' 47"S, 75° 18' 58"E)

Statistics:
     This is 1 of 38940 approved meteorites from Antarctica (plus 5051 unapproved names)
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