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Elephant Moraine 83230
Basic information Name: Elephant Moraine 83230
     This is an OFFICIAL meteorite name.
Abbreviation: EET 83230
Observed fall: No
Year found: 1983
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 530 g
Antarctic Meteorite Newsletter:  AMN 7(2)  (1984)  Iron-ataxite
AMN 13(1)  (1990)  Iron-ataxite-ung
Meteoritical Bulletin:  MB 76  (1994)  Iron-ung
NHM Catalogue:  5th Edition  (2000)  Iron-ung
MetBase:  v. 7.1  (2006)  Iron-ung
Recommended:  Iron, ungrouped    [explanation]

This is 1 of 149 approved meteorites (plus 1 unapproved name) classified as Iron, ungrouped.   [show all]
Search for other: Iron meteorites, Metal-rich meteorites, and Ungrouped irons
Writeup from AMN 7(2):

Sample No.: EET83230

Location: Elephant Moraine

Field No.: 1330

Weight (gms): 530

Meteorite Type: Ataxite


Physical Description: Roy S. Clarke, Jr.

This roughly equidimensional 5.5cm x 5.0cm x 3 cm rounded individual is reminiscent of a small cobble. It is completely covered with a secondary reddish-brown coating of iron oxides, and no indication of fusion crust remains. The surface that has been recently exposed to wind ablation in our atmosphere is slightly smoother than the other surfaces, having rounded edges and a slightly distorted rectangular outline.


Tentative Classification: Roy S. Clarke, Jr .

A slice through one side of the specimen produced a 15cm2 surface for examination. The matrix is martensitic, containing a few widely dispersed kamacite spindles. An occasional spindle will contain a very small schreibersite. The section's most interesting feature is a concentration in one half of the slice of about a dozen mm-sized iron phosphate crystals, some with euhedral outline and/or enclosed troilite. These inclusions are partially bordered by thin kamacites.

Data from:
  Table 2
  Line 1495:
Origin or pseudonym:Main icefield
Mass (g):530
Class:Iron ung
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References: Published in Antarctic Meteorite Newsletter 7(2) (1984), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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     Catalogue of Meteorites:   (76° 11'S, 157° 10'E)
     Recommended::   (76° 18' 3"S, 157° 15' 5"E)
Note: the NHM and MetBase coordinates are 13.3 km apart

     This is 1 of 43857 approved meteorites from Antarctica (plus 3802 unapproved names)
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