Meteoritical Bulletin: Entry for Elephant Moraine 83213

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Elephant Moraine 83213

Basic information

Name: Elephant Moraine 83213
This is an OFFICIAL meteorite name.
Abbreviation: EET 83213
Observed fall: No
Year found: 1983
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 2.73 kg

Classification
history:

Antarctic Meteorite Newsletter:	AMN 8(1)	(1985)	L3
	AMN 13(3)	(1990)	LL3
Meteoritical Bulletin:	MB 76	(1994)	LL3.7
NHM Catalogue:	5th Edition	(2000)	LL3.7
MetBase:	v. 7.1	(2006)	LL3.7
Recommended:			LL3.7 [explanation]

This is 1 of 29 approved meteorites classified as LL3.7. [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Writeup

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Writeup from AMN 8(1):

Sample No.: EET83213

Location: Elephant Moraine

Weight (g): 2727.0

Field No.: 2875

Dimensions (cm): 16 x 15 x 7

Meteorite Type: L3 Chondrite

Macroscopic Description: Carol Schwarz

Dull fractured fusion crust occurs on most of EET83213. Evaporite deposit is present on several surfaces. Interior is greenish-gray with numerous white, cream, and darker gray colored inclusions/chondrules. Metal is present.

Thin Section (,4) Description: Glenn MacPherson

Moderate limonitic staining is locally present, suggesting mild to moderate weathering. Chondrules up to 3-mm diameter are very sharply defined, and set in a brown matrix. Isotropic clear brown glass is preserved in some chondrules. Monoclinic pyroxene is very common and was found in the composition range Fs3 to Fs26. The range of olivine compositions found is Fa13 to Fa30. Metal and troilite are subequal in amount. At least two metal phases are present in plessitic intergrowths, and tetrataenite may also be present. This meteorite is probably an L3 chondrite.

Data from:
  MB76
  Table 2
  Line 1478:

Origin or pseudonym:	Main icefield
Mass (g):	2727
Class:	LL3.7
Weathering grade:	Be
Fayalite (mol%):	13-30
Ferrosilite (mol%):	3-26

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 8(1) (1985), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)

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Geography:

Antarctica

Antarctica

Coordinates:
Catalogue of Meteorites:	(76° 11'S, 157° 10'E)
Recommended::	(76° 16' 58"S, 157° 13' 55"E)

Note: the NHM and MetBase coordinates are 11.2 km apart

Statistics:
This is 1 of 40719 approved meteorites from Antarctica (plus 4494 unapproved names)

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