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Elephant Moraine 87726
Basic information Name: Elephant Moraine 87726
     This is an OFFICIAL meteorite name.
Abbreviation: EET 87726
Observed fall: No
Year found: 1987
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 82.5 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 12(3)  (1989)  H3
Meteoritical Bulletin:  MB 76  (1994)  H3.9
NHM Catalogue:  5th Edition  (2000)  H3.9
MetBase:  v. 7.1  (2006)  H3.9
Recommended:  H3.9    [explanation]

This is 1 of 44 approved meteorites classified as H3.9.   [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Writeuphelp
Writeup from AMN 12(3):

Sample No.: EET87726; 87778; 87823

Dimensions (cm): 7x4x1.5; 7.5x4x2.5; 5x3x2.5

Weight (g): 82.5; 161.7; 95.4

Location: Elephant Moraine

Meteorite Type: H3 chondrite

Field Number: 4553; 4690; 4679;

 

Macroscopic Description: Carol Schwarz

These three weathered fragments have thin fusion crust covering ~50% of their exterior surfaces. The interior surfaces are heavily oxidized, obliterating any features present. EET87778 and 87823 are very coherent, making them extremely difficult to break.

 

Thin Section (EET87726,3; 778,3; 823,2) Description: Brian Mason

These meteorites are so similar in texture and mineral composition that the possibility of pairing should be considered. The sections show a close-packed aggregate of chondrules and chondrule fragments, up to 1.5 mm across, in a minor amount of granular matrix containing considerable nickel-iron and lesser troilite. A variety of chondrule types is present, mostly porphyritic and granular olivine and olivine-pyroxene, but some cryptocrystalline and radiating pyroxene chondrules were seen. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa13-17, mean Fa15 (CV FeO is 7); pyroxene, Fs11-16. The meteorites are classified as H3 chondrites, estimated H3.9.

Data from:
  MB76
  Table 2
  Line 1899:
Origin or pseudonym:Meteorite City
Mass (g):82.5
Class:H3.9
Weathering grade:B/C
Fayalite (mol%):13-16
Ferrosilite (mol%):12-16
Comments:87726 pairing group
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 12(3) (1989), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (76° 11'S, 157° 10'E)
     Recommended::   (76° 11'S, 157° 10'E)

Statistics:
     This is 1 of 38940 approved meteorites from Antarctica (plus 5051 unapproved names)
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