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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:help 9.7 g
Antarctic Meteorite Newsletter:  AMN 29(2)  (2006)  CM2
Meteoritical Bulletin:  MB 92  (2007)  CM2
Recommended:  CM2    [explanation]

This is 1 of 606 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 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 Fa0-40, pyroxene is Fs1-6. The matrix consists pre-dominantly of an Fe-rich serpentine. The meteorites are CM2 chondrites.

Thin Section Images

Light MCY 05229
Plane-Polarized Light
MCY 05229
Cross-Polarized Light
MCY 05230
Cross-Polarized Light
MCY 05230
MCY 05229 - Cross-Polarized Light MCY 05229 - Plane-Polarized Light <a href=MCY 05230 - Cross-Polarized Light"> <a href=MCY 05230 - Cross-Polarized Light">
Light MCY 05230
Cross-Polarized Light
MCY 05242
Plane-Polarized Light
MCY 05242
Cross-Polarized Light
MCY 05245
<a href=MCY 05230 - Plane-Polarized Light"> <a href=MCY 05242 - Cross-Polarized Light"> <a href=MCY 05242 - Plane-Polarized Light"> <a href=MCY 05245 - Cross-Polarized Light">
Plane-Polarized Light
MCY 05245
Cross-Polarized Light
MCY 05251
Plane-Polarized Light
MCY 05251
<a href=MCY 05245 - Plane-Polarized Light"> <a href=MCY 05251 - Cross-Polarized Light"> LAP 031387 - Plane-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:
  Table 3
  Line 691:
Mass (g):9.7
Weathering grade:B
Fayalite (mol%):1-28
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:
Photographs from AMN:
JSC A photo is in the write-up above


     This is 1 of 43331 approved meteorites from Antarctica (plus 3802 unapproved names)

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