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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:
Meteoritical Bulletin:  MB 111  (2023)  Winonaite
Recommended:  Winonaite    [explanation]

This is 1 of 85 approved meteorites (plus 1 unapproved name) 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 Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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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 44274 approved meteorites from Antarctica (plus 3802 unapproved names)
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