Meteoritical Bulletin: Entry for MacKay Glacier 05229

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MacKay Glacier 05229

Basic information

Name: MacKay Glacier 05229
This is an OFFICIAL meteorite name.
Abbreviation: MCY 05229
Observed fall: No
Year found: 2005
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 9.7 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 29(2)	(2006)	CM2
Meteoritical Bulletin:	MB 92	(2007)	CM2
Recommended:			CM2 [explanation]

This is 1 of 544 approved meteorites classified as CM2. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites

Comments:

Approved 1 Sep 2006

Writeup

help

Writeup from AMN 29(2):

Sample No.:	MCY 05229; MCY 05230; MCY 05242; MCY 05245; MCY 05251
Location:	MacKay Glacier
Field No.:	17344; 17392; 13659; 13639; 17348
Dimensions (cm):	3.5x2.5x1.5; 4.5x4.5x2.0; 1.5x1.5x0.5; 1.5x1.0x0.5; 3.5x3.5x2.5
Weight (g):	9.746; 60.070; 1.982; 1.258; 25.253
Meteorite Type:	CM2 Chondrite

Macroscopic Description: Kathleen McBride
The fusion crust on the exteriors of these carbonaceous chondrites range from brown to black to purplish patches and some have polygonal fractures. The interiors are a black soft matrix with mm sized white inclusions.

Thin Section (,2) Description: Tim McCoy and Emma Bullock
The sections consist of a few small chondrules (up to 0.5 mm), mineral grains and CAIs set in a black matrix; rare metal and sulfide grains are present. Olivine compositions are Fa_0-40, pyroxene is Fs_1-6. The matrix consists pre-dominantly of an Fe-rich serpentine. The meteorites are CM2 chondrites.

Thin Section Images

Cross-Polarized Light MCY 05229	Plane-Polarized Light MCY 05229	Cross-Polarized Light MCY 05230	Cross-Polarized Light MCY 05230
		MCY 05230 - Cross-Polarized Light">	MCY 05230 - Cross-Polarized Light">

Plane-Polarized Light MCY 05230	Cross-Polarized Light MCY 05242	Plane-Polarized Light MCY 05242	Cross-Polarized Light MCY 05245
MCY 05230 - Plane-Polarized Light">	MCY 05242 - Cross-Polarized Light">	MCY 05242 - Plane-Polarized Light">	MCY 05245 - Cross-Polarized Light">

Plane-Polarized Light MCY 05245	Cross-Polarized Light MCY 05251	Plane-Polarized Light MCY 05251
MCY 05245 - Plane-Polarized Light">	MCY 05251 - Cross-Polarized Light">

Lab Images

MCY 05229 Image North

<a href=

MCY 05230 Image North" border="0">

<a href=

MCY 05242 and 05245 Image North" border="0">

MCY05251 Image

Data from:
  MB92
  Table 3
  Line 691:

Mass (g):	9.7
Class:	CM2
Weathering grade:	B
Fayalite (mol%):	1-28

Catalogs:

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

References:

Published in Antarctic Meteorite Newsletter 29(2) (2006), JSC, Houston
Published in Meteoritical Bulletin, no. 92, MAPS 42, 1647-1694 (2007)

Find references in NASA ADS:
Find references in Google Scholar:

Photos:

Credit	Photos
Photographs from AMN:
JSC	A photo is in the write-up above

Geography:

Antarctica

Antarctica

Coordinates:

Unknown.

Statistics:
This is 1 of 40719 approved meteorites from Antarctica (plus 4494 unapproved names)

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