header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 18 Aug 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:  
Elephant Moraine 92022
Basic information Name: Elephant Moraine 92022
     This is an OFFICIAL meteorite name.
Abbreviation: EET 92022
Observed fall: No
Year found: 1992
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 9.7 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 17(1)  (1994)  Howardite
Meteoritical Bulletin:  MB 79  (1996)  Howardite
NHM Catalogue:  5th Edition  (2000)  Howardite
MetBase:  v. 7.1  (2006)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 372 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Writeuphelp
Writeup from AMN 17(1):

Sample No.: EET92022

Location: Elephant Moraine

Dimensions (cm): 2.0 x 2.0 x 0.7

Weight (g): 9.7

Meteorite Type: Howardite

 

Macroscopic Description: Carol Schwarz

The exterior of this tabular-shaped meteorite has shiny black fusion crust which has been weathered away in areas. The interior matrix is light gray. Very small gray, white and yellowish inclusions are abundant. This meteorite has only minor oxidation.

 

Thin Section (,2) Descrmtion: Brian Mason

The section shows a brecciated structure, with clasts of orthopyroxene, pigeonite, and plagioclase up to 1.2 mm across in a comminuted groundmass of these minerals; two gabbroic clasts, 3.2 and 1.8 mm across, were noted. Microprobe analyses show a wide range in pyroxene compositions: Wo1-22, Fs20-53, En35-79; orthopyroxene compositions cluster around Wo3Fs24. Plagioclase composition is An90-95. The meteorite is a Howardite; mineral compositions and texture are similar to the EET87503 group of howardites, and the possibility of pairing should be considered.

 

Data from:
  MB79
  Table 2
  Line 222:
Origin or pseudonym:Northern Ice Patch
Mass (g):9.7
Class:How
Weathering grade:A
Ferrosilite (mol%):20-53
Comments:87503 pairing group
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 17(1) (1994), JSC, Houston
Published in Meteoritical Bulletin, no. 79, MAPS 31, A161-A174 (1996)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (76° 11'S, 157° 10'E)
     Recommended::   (76° 1' 28"S, 156° 1' 9"E)
Note: the NHM and MetBase coordinates are 35.5 km apart

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