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Elephant Moraine 83248
Basic information Name: Elephant Moraine 83248
     This is an OFFICIAL meteorite name.
Abbreviation: EET 83248
Observed fall: No
Year found: 1983
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 39.2 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 9(1)  (1986)  H3
Meteoritical Bulletin:  MB 76  (1994)  H3.5
NHM Catalogue:  5th Edition  (2000)  H3.5
MetBase:  v. 7.1  (2006)  H3.5
Recommended:  H3.5    [explanation]

This is 1 of 20 approved meteorites classified as H3.5.   [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Writeuphelp
Writeup from AMN 9(1):

Sample No.: FET83248

Location: Elephant Moraine

Weight (g): 39.2

Field No.: 1364

Dimensions (cm): 3.5 x 3 x 2.5

Meteorite Type: H3 Chondrite

 

Macroscopic Description: Carol Schwarz

Black fusion crust, iridescent on one face, covers all but one side of this smooth specimen. The fracture surface is very dark and iridescent with a few millimeter sized chondrules visible. A few small yellowish-colored chondrules/clasts are visible in the dark matrix that makes up the interior of this meteorite. EET83248 is very coherent.

 

Thin Section (,3) Description: Brian Mason

The section shows a close-packed aggregate of chondrules (0.1-1.2 mm diameter), chondrule fragments, and irregular crystal aggregates, with interstitial nickel-iron and troilite and a small amount of dark fine-grained matrix. Chondrule types include granular and porphyritic olivine and olivine-pyroxene, barred olivine, and fine-grained and radiating pyroxene. Weathering is extensive, with brown limonitic staining throughout the section. Microprobe analyses show olivine ranging in composition from Fa3 to Fa24, with a mean of Fa14 (CV FeO is 45); the pyroxene is clinobronzite ranging in composition from Fs3 to Fs23. These ranges in composition indicate type 3, and the amount of nickel-iron suggests H group; the meteorite is therefore tentatively classed as an H3 chondrite.

Data from:
  MB76
  Table 2
  Line 1512:
Origin or pseudonym:Main icefield
Mass (g):39.2
Class:H3.5
Weathering grade:B
Fayalite (mol%):3-24
Ferrosilite (mol%):3-23
Comments:26Al=44±7
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 9(1) (1986), 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° 19' 21"S, 157° 11' 5"E)
Note: the NHM and MetBase coordinates are 15.5 km apart

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