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Grove Mountains 022905
Basic information Name: Grove Mountains 022905
     This is an OFFICIAL meteorite name.
Abbreviation: GRV 022905
Observed fall: No
Year found: 2003
Country: Antarctica [Collected by Chinese Antarctic Research Expedition (CARE)]
Mass:help 13.1 g
Classification
  history:
Recommended:  Winonaite    [explanation]

This is 1 of 78 approved meteorites classified as Winonaite.   [show all]
Search for other: Primitive achondrites, Winonaites
Comments: Approved 12 Nov 2022
Writeuphelp
Writeup from MB 111:

Grove Mountains 022905 (GRV 022905)        72°46’30"S, 75°19’01"E

Antarctica

Find: 22 Jan 2003

Classification: Primitive achondrite (Winonaite)

History: Found by CHINARE in 2002 from Grove Mountains, Antarctica.

Physical characteristics: Fusion crust residue is noticed on the surface.

Petrography (Zhipeng Xia, Bingkui Miao, GUT): The silicate minerals in this meteorite include olivine, low-Ca pyroxene, high-Ca pyroxene, and a small amount of feldspar. Fe-Ni metal is common (estimated about 10 vol%). Highly recrystallized crystalline with triple junctions. Except for feldspar, the size of the silicate mineral is between 40-250 μm, and most of which are about 150 µm. No residual chondrule were observed.

Geochemistry (Zhipeng Xia, Bingkui Miao, GUT): olivine: Fa4.8 (Fa4.6-5.0, FeO/MnO=9.1±0.3, n=4); low-Ca pyroxene: Fs4.5±0.2Wo2.9±0.1 (Fs4.3-4.7Wo2.8-3.0, FeO/MnO=5.5±0.2, n=4); High-Ca pyroxene: Fs2.3±0.2Wo41.5±0.5 (Fs2.1-2.5Wo41.0-42.0, n=5); feldspar: An25.5±1.5Ab70.0±1.2Or4.5±0.2, n=4.

Classification: Winonaite

Specimens: 13.06 g specimen and a polished thin section are deposited in PRIC.

Data from:
  MB111
  Table 0
  Line 0:
Date:22 Jan 2003
Latitude:72°46'30"S
Longitude:75°19'01"E
Mass (g):13.06
Pieces:1
Class:Winonaite
Shock stage:S2
Weathering grade:W2
Classifier:Z. Xia, B. Miao, GUT
Type spec mass (g):13.06
Type spec location:PRIC
Main mass:PRIC
Finder:CHINARE
Comments:Submitted by Bingkui Miao
Institutions
   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)
Catalogs:
Search for this meteorite in the Chinese meteorite database (CHINARE):   
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
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Photos:
CreditPhotos
Public domain photographs:
Bingkui Miao; Zhipeng Xia         
Geography:

Antarctica
Coordinates:
     Recommended::   (72° 46' 30"S, 75° 19' 1"E)

Statistics:
     This is 1 of 43699 approved meteorites from Antarctica (plus 3802 unapproved names)
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