Meteoritical Bulletin: Entry for MacAlpine Hills 02501

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MacAlpine Hills 02501

Basic information

Name: MacAlpine Hills 02501
This is an OFFICIAL meteorite name.
Abbreviation: MAC 02501
Observed fall: No
Year found: 2002
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 32.4 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 28(1)	(2005)	L3
Meteoritical Bulletin:	MB 89	(2005)	L3
MetBase:	v. 7.1	(2006)	L3
Recommended:			L3 [explanation]

This is 1 of 848 approved meteorites (plus 2 unapproved names) classified as L3. [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Field number: 14044

Writeup

help

Writeup from AMN 28(1):

Sample No.:	MAC 02467; MAC 02501; MAC 02509
Location:	MacAlpine Hills
Field No.:	14020; 14044; 14072
Dimensions (cm):	3.0x2.5x2.0 3.3x2.7x1.6 4.0x3.2x3.2
Weight (g):	18.867; 32.375; 62.414
Meteorite Type:	L3 Chondrite

MAC02467

MAC02501 and MAC02509

Macroscopic Description: Kathleen McBride, Cecilia Satterwhite
The exterior has brown/black fusion crust with oxidation haloes visible. The interior is dark gray to black with some rusty areas. Gray, white, and rusty millimeter sized inclusions are visible.

Thin Section (,2) Description: Cari Corrigan, Tim McCoy
These meteorites are so similar that a single description suffices. The sections exhibit numerous large (up to 4 mm), well-defined chondrules in a black matrix of fine-grained silicates, metal and troilite. Weak shock effects are present. Polysynthetically twinned pyroxene is present. Weathering ranges from minor to moderate. Silicates are unequilibrated; olivines range from Fa_0-25 and pyroxenes from Fs_1-20. The meteorites are L3 chondrites (estimated subtype 3.4).


MAC 02467 Cross-Polarized Light	MAC 02501 Cross-Polarized Light	MAC 02509 Cross-Polarized Light

MAC 02467 Plane-Polarized Light	MAC 02501 Plane-Polarized Light	MAC 02509 Plane-Polarized Light

Data from:
  MB89
  Table A1
  Line 297:

Origin or pseudonym:	lower Macalpine
Mass (g):	32.38
Class:	L3
Weathering grade:	B
Fayalite (mol%):	1-25
Ferrosilite (mol%):	6
Comments:	02467 pairing group

Catalogs:

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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:

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

Geography:

Antarctica

Antarctica

Coordinates:
Recommended::	(84° 16' 53"S, 160° 3' 14"E)

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

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