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MacAlpine Hills 88199
Basic information Name: MacAlpine Hills 88199
     This is an OFFICIAL meteorite name.
Abbreviation: MAC 88199
Observed fall: No
Year found: 1988
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 28.9 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 13(3)  (1990)  L3
Meteoritical Bulletin:  MB 76  (1994)  L3.4
NHM Catalogue:  5th Edition  (2000)  L3.4
MetBase:  v. 7.1  (2006)  L3.3
Antarctic Meteorite Newsletter:  AMN 33(1)  (2010)  L3.3
Recommended:  L3.3    [explanation]

This is 1 of 18 approved meteorites classified as L3.3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Field number: 5743
Writeuphelp
Writeup from AMN 13(3):

Sample No. MAC88199

Location: MacAlpine Hills

Dimensions (cm): 2.5 x 2 x 1.5

Field Number: 5743

Weight (g): 28.9

Meteorite Type: L3 chondrite

 

Macroscopic Description: Cecilia Satterwhite

Ninety-five percent of this unequilibrated chondrite is covered with black, frothy and pitted fusion crust. This chondrite is composed of brownish black matrix with abundant chondrules/inclusions that have a range in color from white to yellow to orange and a range in size from 0.1 to 0.3 mm.

 

Thin Section (,2) Description: Brian Mason

Chondrules and chondrule fragments are abundant, ranging up to 1.2 mm across, with one exceptionally large one 4.2 mm across. They are set in a dark matrix which contains a little nickel-iron and troilite, sometimes concentrated on the rims of chondrules. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa1-29 (CV FeO is 55); pyroxene, is Fs2-23. The variability of olivine and pyroxene compositions indicates type 3, and the small amount of nickel-iron L group; hence the meteorite is classified L3 (estimated L3.4).

Data from:
  MB76
  Table 2
  Line 4747:
Mass (g):28.9
Class:L3.4
Weathering grade:B
Fayalite (mol%):1-29
Ferrosilite (mol%):2-23
Catalogs:
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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::   (84° 19' 40"S, 159° 27' 7"E)
Note: the NHM and recommended coordinates are 17 km apart

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