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MacAlpine Hills 88102
Basic information Name: MacAlpine Hills 88102
     This is an OFFICIAL meteorite name.
Abbreviation: MAC 88102
Observed fall: No
Year found: 1988
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 754 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 12(3)  (1989)  Mesosiderite
Meteoritical Bulletin:  MB 76  (1994)  Mesosiderite
NHM Catalogue:  5th Edition  (2000)  Mesosiderite
MetBase:  v. 7.1  (2006)  Mesosiderite
Recommended:  Mesosiderite    [explanation]

This is 1 of 188 approved meteorites classified as Mesosiderite.   [show all]
Search for other: Mesosiderites, Metal-rich meteorites
Comments: Field number: 5738
Writeuphelp
Writeup from AMN 13(3):

Sample No.: MAC88102

Location: MacAlpine Hills

Dimensions (cm): 8x6x6 5

Field Number: 5738

Weight (g): 754.3

Meteorite Type: Mesosiderite

 

Macroscopic Description: Roberta Score,

MAC88102 is an angular, considerably weathered mesosiderite. Small patches of dull fusion crust are scattered over the red brown exterior. There are abundant large weathered silicate inclusions as large as 1 x 2.5 cm, which are greenish to black in color. This specimen broke along a pre existing fracture exposing extremely weathered material with abundant powdery rust Most likely this is not representative of the entire meteorite. The metal is still very coherent, as obtaining a chip from other than along a pre-existing crack was nearly impossible.

 

Thin Section (,5) Description, Brian Mason

The section consists largely of nickel-iron.. with a minor amount of silicate material. Much of the silicate material is comminuted pyroxene and plagioclase, but with some clasts up to 24 mm long; a little olivine and accessory tridymite and merrillite are present. Most of the pyroxene has a uniform composition Wo3Fs30, but a few more calcic grains were analysed. The composition of an olivine clast is Fa18. Plagioclase compositions are in the range An86-95. The meteorite is a mesosiderite.

Data from:
  MB76
  Table 2
  Line 4650:
Mass (g):754.3
Class:Meso
Weathering grade:B
Fayalite (mol%):18
Ferrosilite (mol%):30
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(3) (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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