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Elephant Moraine A79002
Basic information Name: Elephant Moraine A79002
     This is an OFFICIAL meteorite name.
Abbreviation: EETA79002
This meteorite may also be called Elephant Moraine 79002 (EET 79002) in publications.

Observed fall: No
Year found: 1979 or 1980
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 2.84 kg
Antarctic Meteorite Newsletter:  AMN 3(3)  (1980)  Diogenite
Meteoritical Bulletin:  MB 76  (1994)  Diogenite
NHM Catalogue:  5th Edition  (2000)  Diogenite
MetBase:  v. 7.1  (2006)  Diogenite
Recommended:  Diogenite    [explanation]

This is 1 of 518 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
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.: EETA79002

Location: Elephant Moraine

Field No.: 1206

Weight (gms): 2843.0

Meteorite Type: Diogenite


Physical Description: Roberta Score

This rounded meteorite has dull black fusion crust on all surfaces except for one which is a fracture surface. Fusion crust has been plucked away in places revealing a medium-gray colored matrix with many light to cream colored clasts (~.5 cm diameter). Several areas have been heavily oxidized giving these parts a red-brown color. Many fractures penetrate this meteorite. Chipping this sample revealed an extensive orange-brown weathering rind as wide as 1 cm. The interior matrix is blue-gray in color with many small (<1 mm) clasts. Two white clasts 0.5 cm diameter were exposed. No metal was obvious. Dimensions: 15 x 13.5 x 10 cm.


Petrographic Description: Arch Reid

The one thin section cut from the meteorite is a breccia with a very cohesive fine grained matrix. Clasts are monomineralic, angular and range up to 2 mm. one angular lithic clast is polymineralic but extremely fine grained. The vast majority of the mineral fragments are low calcium pyroxenes of near constant composition, Wo2En76Fs22. The only other silicate phase identified was olivine, Fo75-76. Small areas within the breccia are rich in very fine opaque minerals. The meteorite is a diogenite but is texturally distinct from the common diogenites.

Data from:
  Table 2
  Line 1439:
Origin or pseudonym:Main icefield
Mass (g):2843
Weathering grade:B
Fayalite (mol%):24-25
Ferrosilite (mol%):22
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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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     Catalogue of Meteorites:   (76° 11'S, 157° 10'E)
     Recommended::   (76° 19' 48"S, 157° 14' 34"E)
Note: the NHM and MetBase coordinates are 16.5 km apart

     This is 1 of 44248 approved meteorites from Antarctica (plus 3802 unapproved names)
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