Meteoritical Bulletin: Entry for MacAlpine Hills 02527

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MacAlpine Hills 02527

Basic information

Name: MacAlpine Hills 02527
This is an OFFICIAL meteorite name.
Abbreviation: MAC 02527
Observed fall: No
Year found: 2002
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 3.38 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 26(2)	(2003)	Eucrite-br
Meteoritical Bulletin:	MB 88	(2004)	Eucrite-br
MetBase:	v. 7.1	(2006)	Eucrite
Recommended:			Eucrite-br [explanation]

This is 1 of 237 approved meteorites classified as Eucrite-br. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Field number: 14272
Revised 28 Oct 2019: Corrected mass, per JSC

Writeup

Writeup from AMN 26(2):

Sample No.:	MAC 02527
Location:	MacAlpine Hills
Field No.:	14272
Dimensions (cm):	2.0x1.0x0.75
Weight (g):	3.377
Meteorite Type:	Eucrite (Brecciated)

Macroscopic Description: Kathleen McBride
50% of the exterior has a dark brown, dull fusion crust. The interior is light gray matrix with white and tan inclusions < 1 mm in size.

Thin Section (,3) Description: Tim McCoy, Linda Welzenbach
The sections are composed of a groundmass of pyroxene and plagioclase (up to 0.5 mm) with few basaltic clasts. Pyroxene grains are mixtures of orthopyroxene and augite with exsolution lamellae of 1-5 microns. Most pyroxene analyses were intermediate compositions, but end members appear to be FeO-rich with orthopyroxene of Fs₆₁Wo₃ and augite of Fs₂₈Wo₄₁ (Fe/Mn ~ 30). Plagiolcase is An₉₀. The meteorite is a brecciated eucrite.


Plane-Polarized Light	Cross-Polarized Light	Plane-Polarized Light	Cross-Polarized Light

Data from:
  MB88
  Table A1
  Line 47:

Mass (g):	3.377
Class:	Eu-br
Weathering grade:	B
Ferrosilite (mol%):	61

Catalogs:

Search for this meteorite in the NASA/JSC database (U.S.):

References:

Published in Antarctic Meteorite Newsletter 26(2) (2003), JSC, Houston
Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)

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Photos:

Credit	Photos
Photographs from AMN:
Photograph from unknown source	A photo is in the write-up above

Geography:

Antarctica

Coordinates:
Recommended::	(84° 18' 54"S, 159° 47' 17"E)

Note: the MetBase and recommended coordinates are 13.5 km apart

Statistics:
This is 1 of 44543 approved meteorites from Antarctica (plus 3802 unapproved names)

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Revision
history:

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