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Elephant Moraine 92014
Basic information Name: Elephant Moraine 92014
     This is an OFFICIAL meteorite name.
Abbreviation: EET 92014
Observed fall: No
Year found: 1992
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 2.1 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 374 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Writeuphelp
Writeup from AMN 17(1):

Sample No.: EET92014; 92015

Location: Elephant Moraine

Dimensions (cm): 1.6 x 1.0 x 0.5; 1.7 x 1.0 x 1.1

Weight (g): 2.1; 4.1

Meteorite Type: Howardite

 

Macroscopic Description: Cecilia Satterwhite

At least half of the exterior surfaces are covered with shiny fusion crust. Areas without fusion crust are light to medium gray in color with light and dark clasts visible. One black, glassy clast visible on the exterior of 92014 is 0.7 in length and penetrates the interior. The interior matrices are light gray with abundant small white, yellow, and black clasts. Minor oxidation was noted.

 

Thin Section (EET92014,4 and ,5: 92015,2) Description: Brian Mason

The major part of both sections of EET92014 consists of a breccia of pyroxene and plagioclase clasts up to 3 mm across, in a comminuted groundmass of these minerals. Section 92014,5 contains an enclave of dark glass with skeletal pyroxene crystals, 5 mm in greatest dimension; a similar but smaller enclave is present in 92014,4. The section of 92015 is essentially identical with those of EET92014, except for the absence of dark glassy enclaves; the meteorites are probably paired. Microprobe analyses show pyroxene compositions ranging from Wo2Fs20 to Wo28Fs44 in both the typical and dark glassy areas; the largest clasts are the most Mg-rich. Plagioclase compositions range from An82 to An92. The dark glass has somewhat variable composition, but approximates to the overall bulk composition of the meteorite; the enclaves are therefore interpreted as probably shock-melted areas. The meteorite is a howardite.

 

Data from:
  MB79
  Table 2
  Line 214:
Origin or pseudonym:Northern Ice Patch
Mass (g):2.1
Class:How
Weathering grade:A/B
Ferrosilite (mol%):20-41
Comments:92014 pairing group
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 17(1) (1994), JSC, Houston
Published in Meteoritical Bulletin, no. 79, MAPS 31, A161-A174 (1996)
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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (76° 11'S, 157° 10'E)
     Recommended::   (76° 3' 7"S, 156° 1' 45"E)
Note: the NHM and MetBase coordinates are 33.8 km apart

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
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