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MacAlpine Hills 88184
Basic information Name: MacAlpine Hills 88184
     This is an OFFICIAL meteorite name.
Abbreviation: MAC 88184
Observed fall: No
Year found: 1988
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 20.6 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 13(2)  (1990)  E3
AMN 17(1)  (1994)  EL3
Meteoritical Bulletin:  MB 76  (1994)  EL3
NHM Catalogue:  5th Edition  (2000)  EL3
MetBase:  v. 7.1  (2006)  EL3
Recommended:  EL3    [explanation]

This is 1 of 22 approved meteorites classified as EL3.   [show all]
Search for other: EL chondrites, Enstatite chondrites, Enstatite chondrites (type 3), and Enstatite-rich meteorites
Comments: Field number: 6170
Writeuphelp
Writeup from AMN 13(2):

Sample No: MAC88184

Location: MacAlpine Hills

Dimensions (cm): 4x2.5x1.5

Field Number: 6670

Weight (g): 20.6

Meteorite Type: E3 chondrite

 

Macroscopic Description: Robbie Marlow

Brown and black frothy fusion crust covers 95% of MAC88184. Deep cracks penetrate the interior. Oxidation is heavy and has masked any interior structure present.

 

Thin Section (,3) Description: Brian Mason

Chondrules and chondrule fragments are abundant, ranging up to 1.5 mm across; they consist of granular or cryptocrystalline pyroxene. The matrix consists largely of small pyroxene grains, with some nickel-iron and minor sulfides. Microprobe analyses show that the pyroxene is clinoenstatite, with variable but low iron content (FeO 0.4-1.8%); the metal grains show a low and variable silicon content, ranging up to 0.6%. The meteorite is tentativley classified as an E3 enstatite chondrite, probably paired with MAC88136 and 88180.

Data from:
  MB76
  Table 2
  Line 4732:
Mass (g):20.6
Class:EL3
Weathering grade:C
Ferrosilite (mol%):0.6-2.5
Catalogs:
Search for specimens in the Smithsonian Institution collection (U.S.):   
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Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 13(2) (1990), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (84° 13'S, 160° 30'E)
     Recommended::   Unknown

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

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