Meteoritical Bulletin: Entry for Cumulus Hills 04021

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Cumulus Hills 04021

Basic information

Name: Cumulus Hills 04021
This is an OFFICIAL meteorite name.
Abbreviation: CMS 04021
Observed fall: No
Year found: 2003
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 61.3 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 28(2)	(2005)	Mesosiderite
Meteoritical Bulletin:	MB 91	(2007)	Mesosiderite
Recommended:			Mesosiderite [explanation]

This is 1 of 273 approved meteorites classified as Mesosiderite. [show all]
Search for other: Mesosiderites, Metal-rich meteorites

Comments:

Approved 1 Sep 2005

Writeup

Writeup from AMN 28(2):

Sample No.:	CMS 04021
Location:	Cumulus Hills
Field No.:	14615
Dimensions (cm):	5.0x3.5x2.5
Weight (g):	61.333
Meteorite Type:	Mesosiderite

Macroscopic Description: Kathleen McBride
80% of the exterior is covered by thin, shiny chocolate brown fusion crust. The light gray crystalline matrix has 1-5 mm black angular inclusions, and 1-2 mm yellow and brown inclusions.

Thin Section (,4) Description: Tim McCoy


Cross-Polarized Light	Reflected Light

The section shows a groundmass of comminuted pyroxene, plagioclase, metal and sulfide with larger silicate fragments reaching 2 mm. Orthopyroxene compositions range from Fs_28-32Wo_2-3 (Fe/Mn ~30) and plagioclase is An_77-94Or_0-2. The meteorite is probably a silicate clast from a mesosiderite.

Data from:
  MB91
  Table 4
  Line 18:

Mass (g):	61.3
Class:	Meso
Weathering grade:	A/B
Ferrosilite (mol%):	28-32

Catalogs:

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

References:

Published in Antarctic Meteorite Newsletter 28(2) (2005), JSC, Houston
Published in Meteoritical Bulletin, no. 91, MAPS 42, 413-466 (2007)

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Photos:

Credit	Photos
Photographs from AMN:
Photograph from unknown source	A photo is in the write-up above
Photos from the Encyclopedia of Meteorites:
Dr Carlton Allen, JSC-KT, NASA

Geography:

Antarctica

Coordinates:

Unknown.

Statistics:
This is 1 of 44547 approved meteorites from Antarctica (plus 3802 unapproved names)

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Revision
history:

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