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Grove Mountains 021768
Basic information Name: Grove Mountains 021768
     This is an OFFICIAL meteorite name.
Abbreviation: GRV 021768
Observed fall: No
Year found: 2003
Country: Antarctica [Collected by Chinese Antarctic Research Expedition (CARE)]
Mass:help 1 g
Classification
  history:
Meteoritical Bulletin:  MB 95  (2009)  CR
Recommended:  CR    [explanation]

This is 1 of 14 approved meteorites classified as CR.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), and CR chondrites
Comments: Approved 23 Dec 2008
Writeuphelp
Writeup from MB online:

Grove Mountains 021768 (GRV 021768)        72° 47' 4"S,  75° 19' 33"E

Antarctica

Found: 20 January 2003

Classification: Carbonaceous chondrite (CR)

History: The meteorite was recovered by J. Li in a large moraine in Grove Mountains. It has an irregular shape with a small fraction of black fusion crust. It weighs 1 g.

Petrography: (L. Zhang and J. Zhu, BeiAP). Meteorite contains well-defined, abundant (~60 vol %) and metal-bearing chondrules. The average chondrule size is 1.0 mm. Chondrules include PO, POP, PP. Metallic Fe-Ni is abundant (6.4 vol %), and occurs mostly in rims of chondrules. Silicates are FeO-poor: forsterite, enstatite and endiopside. Accessory phases are phyllosilicates, anorthite, carbonates, sulfides, and pyrrhotite.

Geochemistry: Olivine (n=29, Fa0.4–2.7, average=Fa1.4), Low-Ca pyroxene (n=24, Fs1.3-6.3, average=Fs2.8), High-Ca pyroxene (n=15, Fs1.1-6.2, average=Fs2.6).

Classification: Carbonaceous chondrite (CR); W1, S2.

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

Data from:
  MB95
  Table 5
  Line 122:
Date:1/20/2003
Latitude:72°47'04"S
Longitude:75°19'33"E
Mass (g):1
Pieces:1
Class:CR
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):1.4 (0.4-2.7)
Ferrosilite (mol%):2.8 (1.3-6.3)
Wollastonite (mol%):0.8 (0.3-1.6)
Classifier:BeiAP
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)
BeiAP: Beijing Astronomical Planetarium, Beijing, 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° 47' 4"S, 75° 19' 33"E)

Statistics:
     This is 1 of 40129 approved meteorites from Antarctica (plus 4494 unapproved names)
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