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Elephant Moraine A79006
Basic information Name: Elephant Moraine A79006
     This is an OFFICIAL meteorite name.
Abbreviation: EETA79006
This meteorite may also be called Elephant Moraine 79006 (EET 79006) in publications.

Observed fall: No
Year found: 1979 or 1980
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 716 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 3(3)  (1980)  Howardite
AMN 17(1)  (1994)  Eucrite-pmict
Meteoritical Bulletin:  MB 76  (1994)  Eucrite-pmict
NHM Catalogue:  5th Edition  (2000)  Eucrite-pmict
MetBase:  v. 7.1  (2006)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 342 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Writeuphelp
Writeup from AMN 3(3):
This text was reprinted from AMN 3(3) in AMN 4(1). In some cases, it may be an updated version from the original.

Sample No.: EETA79006

Location: Elephant Moraine

Field No.: 1042

Weight (gms): 716.4

Meteorite Type: Howardite

 

Physical Description: Roberta Score

Dull to shiny black fusion crust appears on only part of one surface on this achondrite. Many vugs are apparent, some of which have clasts in their interior. The medium gray matrix contains a variety of clasts (dark gray, yellow, white colored clasts), the largest being 1 cm in its longest dimension. Several rounded spots of oxidation are obvious and several cracks appear to penetrate the sample. Dimensions: 14 x 8.5 x 4.5 cm.

 

Petrographic Description: Arch Reid

The thin section shows a fine breccia with angular pyroxene and feldspar fragments and less common opaques. The larger pyroxene fragments up to 1 mm are commonly deformed and some show exsolution. There are a variety of clast types and these include the following: 1) small eucritic fragments with fine grain size, clasts up to 2 mm; 2) polymineralic pyroxene-feldspar intergrowths; 3) fragments of brown devitrified glass, up to 1 mm; 4) one fragment, 2 mm, with feldspar >> pyroxene; 5) one fragment, 2 mm, with pyroxene >> feldspar, and; 6) one 4.5 mm recrystallized eucrite clast with mosaic texture. Analysis of pyroxenes yields a wide range of compositions from Wo1En80Fs19 to Wo15En28Fs57. The meteorite contains a variety of clast types and a wide range of pyroxene compositions and is classed as a howardite.

Data from:
  MB76
  Table 2
  Line 1443:
Origin or pseudonym:Main icefield
Mass (g):716.4
Class:Eu "pm"
Weathering grade:B
Ferrosilite (mol%):19-57
Comments:NTL=4.5±0.5; 79006 pairing group
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 3(3) (1980), 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° 17' 28"S, 157° 13' 22"E)
Note: the NHM and MetBase coordinates are 12.1 km apart

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