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MacAlpine Hills 02820
Basic information Name: MacAlpine Hills 02820
     This is an OFFICIAL meteorite name.
Abbreviation: MAC 02820
Observed fall: No
Year found: 2002
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 0.21 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 28(1)  (2005)  CM1-2
Meteoritical Bulletin:  MB 89  (2005)  CM1-2
MetBase:  v. 7.1  (2006)  CM1/2
Antarctic Meteorite Newsletter:  AMN 31(1)  (2008)  CM1/2
Recommended:  CM1/2    [explanation]

This is 1 of 25 approved meteorites classified as CM1/2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 1), CM chondrites, and CM-CO clan chondrites
Comments: Field number: 14428
Writeuphelp
Writeup from AMN 28(1):
Sample No.: MAC 02820
Location: MacAlpine Hills
Field No.: 14428
Dimensions (cm):   0.75x0.5x0.5
Weight (g): 0.212
Meteorite Type: CM1-2 Chondrite


Macroscopic Description: Kathleen McBride
25% of the exterior is covered with thick brown/black fusion crust. The interior is a gray matrix with rusty areas and gray chondrules.

Thin Section (,2) Description: Cari Corrigan, Tim McCoy

MAC 02820 - Plane-Polarized Light
Plane-Polarized Light
The section consists of a single unaltered olivine in a groundmass of hydrated phyllosilicates, including those that replace chondrules. Olivine is Fa2. The matrix consists dominantly of an Fe-rich serpentine. The meteorite is a CM chondrite intermediate between petrologic types 1 and 2.
Data from:
  MB89
  Table A1
  Line 550:
Origin or pseudonym:Bottom Lip
Mass (g):0.21
Class:CM1-2
Weathering grade:B
Fayalite (mol%):2
Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 28(1) (2005), JSC, Houston
Published in Meteoritical Bulletin, no. 89, MAPS 40, A201-A263 (2005)
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Photos:
CreditPhotos
Photographs from AMN:
Photograph from unknown source A photo is in the write-up above
Geography:

Antarctica
Coordinates:
     Recommended::   (84° 18' 56"S, 159° 43' 16"E)

Statistics:
     This is 1 of 38937 approved meteorites from Antarctica (plus 5051 unapproved names)
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