Meteoritical Bulletin: Entry for MacAlpine Hills 02635

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MacAlpine Hills 02635

Basic information

Name: MacAlpine Hills 02635
This is an OFFICIAL meteorite name.
Abbreviation: MAC 02635
Observed fall: No
Year found: 2002
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 17.9 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 27(1)	(2004)	EL3
Meteoritical Bulletin:	MB 88	(2004)	EL3
MetBase:	v. 7.1	(2006)	EL3
Recommended:			EL3 [explanation]

This is 1 of 27 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: 14780

Writeup

Writeup from AMN 27(1):

Sample No.:	MAC 02635
Location:	MacAlpine Hills
Field No.:	14780
Dimensions (cm):	3.0x2.0x2.0
Weight (g):	17.891
Meteorite Type:	EL3 Chondrite

Macroscopic Description: Kathleen McBride
The exterior of this enstatite chondrite is rusty and shiny. The rusty black matrix is hard, brittle and contains dark gray to rusty chondrules/inclusions that are 1-2 mm in size.

Thin Section (,2) Description: Linda Welzenbach, Tim McCoy
The section shows an aggregate of chondrules (up to 2 mm), chondrule fragments, and pyroxene grains in a matrix of about 30% metal and sulfide. A few chondrules contain rare olivine. Weathering is moderate, with staining of enstatite grains and heavy alteration of metal and sulfides. Microprobe analyses shows the orthopyroxene is Fs_1-4 and metal contains 1.1 wt.% Si. The meteorite is an EL3 chondrite and is likely not paired with MAC 02837/02839.


Cross-Polarized Light	Plane-Polarized Light	Reflected Light

Data from:
  MB88
  Table A1
  Line 74:

Mass (g):	17.891
Class:	EL3
Weathering grade:	C
Ferrosilite (mol%):	1-4

Catalogs:

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

References:

Published in Antarctic Meteorite Newsletter 27(1) (2004), 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' 58"S, 159° 45' 14"E)

Note: the MetBase and recommended coordinates are 13.9 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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