header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 30 Nov 2019
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Grosvenor Mountains 85202
Basic information Name: Grosvenor Mountains 85202
     This is an OFFICIAL meteorite name.
Abbreviation: GRO 85202
Observed fall: No
Year found: 1985
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 27.2 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 9(3)  (1986)  C2
Meteoritical Bulletin:  MB 76  (1994)  C2
NHM Catalogue:  5th Edition  (2000)  C2
MetBase:  v. 7.1  (2006)  CM2
Antarctic Meteorite Newsletter:  AMN 31(1)  (2008)  CM2
Recommended:  CM2    [explanation]

This is 1 of 533 approved meteorites classified as CM2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites
Writeuphelp
Writeup from AMN 9(3):

Sample No.: GRO85202

Location: Grosvenor Mountains

Weight (g): 27.2

Field No.: 2053

Dimensions (cm): 4 x 3.5 x 3.5

Meteorite Type: C2 Chondrite

 

Macroscopic Description: René Martinez

Thin fractured fusion crust covers two sides of this carbonaceous chondrite. Fusion crust appeared to be the only thing holding the sample together as it was highly fractured and disintegrated when the stone was chipped. The interior is fine-grained with no inclusions visible. Minute evaporite deposit lines some of the interior fractures.

 

Thin Section (,4) Description: Brian Mason

The section shows a dark brown to black matrix with numerous mineral grains and aggregates and rare small chondrules. Most of the mineral grains and aggregates consist of an isotropic to weakly birefringent serpentine-like mineral. A few grains of olivine near Mg2SiO4 in composition were analysed; some grains of calcite were noted. The meteorite is a C2 chondrite.

Data from:
  MB76
  Table 2
  Line 2851:
Mass (g):27.2
Class:C2
Weathering grade:A/Be
Fayalite (mol%):0.8-1.2
Catalogs:
Search for specimens in the Smithsonian Institution collection (U.S.):   
    Require SI photo
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 9(3) (1986), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (85° 40'S, 175° 0'E)
     Recommended::   (85° 40'S, 175° 0'E)

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
Proximity search:
Find nearby meteorites: enter search radius (km):

Direct link to this page