header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 26 Mar 2024
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:
 
MacKay Glacier 05231
Basic information Name: MacKay Glacier 05231
     This is an OFFICIAL meteorite name.
Abbreviation: MCY 05231
Observed fall: No
Year found: 2005
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 6.2 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 29(2)  (2006)  CM1-2
Meteoritical Bulletin:  MB 92  (2007)  CM1-2
Recommended:  CM1/2    [explanation]

This is 1 of 25 approved meteorites classified as CM1/2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 1), CM chondrites, and CM-CO clan chondrites
Comments: Approved 1 Sep 2006
Revised 30 May 2009: Change to CM1/2 from 1-2: not described as a breccia
Writeuphelp
Writeup from AMN 29(2):
Sample No.: MCY 05231; MCY 05234
Location: MacKay Glacier
Field No.: 17332; 13694
Dimensions (cm):   3.0x1.0x1.25; 1.25x0.75x0.5
Weight (g): 6.158; 0.795
Meteorite Type: CM1-2 Chondrite


Macroscopic Description: Kathleen McBride
The exteriors have some purplish black fusion crust with polygonal fractures. The interiors have a soft black matrix with light colored chondrules/inclusions.


Thin Section (,2) Description: Tim McCoy and Emma Bullock
The sections consist of rare small chondrules and individual silicates in a highly-altered matrix. Olivine compositions are Fa0-33, pyroxene is Fs1-40. The matrix consists pre-dominantly of an Fe-rich serpentine. The meteorites are CM1-2 chondrites.



Thin Section Images

Cross-Polarized Light
MCY 05231
Plane-Polarized Light
MCY 05231
Reflected Light
MCY 05231
MCY 05231 - Cross-Polarized Light MCY 05231 - Plane-Polarized Light MCY 05231 - Reflected Light
Cross-Polarized Light
MCY 05234
Plane-Polarized Light
MCY 05234
Reflected Light
MCY 05234
<a href=MCY 05234 - Cross-Polarized Light"> <a href=MCY 05234 - Plane-Polarized Light"> <a href=MCY 05234 - Reflected Light">



Lab Images

MCY 05231 and 05234 Image North

Data from:
  MB92
  Table 3
  Line 693:
Mass (g):6.2
Class:CM1-2
Weathering grade:B
Fayalite (mol%):0-33
Ferrosilite (mol%):1-40
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:
CreditPhotos
Photographs from AMN:
JSC A photo is in the write-up above
Geography:

Antarctica
Coordinates:Unknown.

Statistics:
     This is 1 of 44400 approved meteorites from Antarctica (plus 3802 unapproved names)
Crosslinks:
Also see:
  This lists the most popular meteorites among people who looked up this meteorite.
Revision
  history:
  This lists important revisions made to data for this record.

Direct link to this page