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Cumulus Hills 04061
Basic information Name: Cumulus Hills 04061
     This is an OFFICIAL meteorite name.
Abbreviation: CMS 04061
Observed fall: No
Year found: 2003
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 8.47 kg
Antarctic Meteorite Newsletter:  AMN 28(2)  (2005)  Pallasite
Meteoritical Bulletin:  MB 91  (2007)  Pallasite
Recommended:  Pallasite    [explanation]

This is 1 of 76 approved meteorites classified as Pallasite.   [show all]
Search for other: Metal-rich meteorites, Pallasites
Comments: Approved 1 Sep 2005
Writeup from AMN 28(2):
Sample No.: CMS 04061-04079
Location: Cumulus Hills
Field No.: 14682; 14627; 14639; 14614; 14076; 14611; 14608; 14688; 14698; 14660; 14669; 14693; 14663; 14604; 14647; 14609; 14619; 14606; 14664
Dimensions (cm):   23.0x17.0x10.0; 18.0x17.5x21.0; 19.0x12.0x16.0; 37.5x19.5x15.0; 15.0x13.5x12.5; 16.5x11.5x9.5; 10.5x20.0x14.0; 41.0x24.0x13.0; 40.0x36.0x19.5; 16.0x9.0x10.0; 13.0x9.0x8.0; 15.5x7.5x9.5; 12.0x8.0x10.0; 10.0x4.5x5.0; 2.0x2.0x1.0; 2.5x1.5x1.5; 20.0x15.5x10.0; 17.5x14.5x9.5; 19.5x14.5x15.0
Weight (g): 8465.0; 15315.0; 6188.3; 19195.0; 5738.0; 5877.0; 7561.9; 20425.0; 44700.0; 3515.8; 2110.1; 2312.9; 928.2; 325.7; 9.592; 8.252; 9625.0; 5695.2; 12550.0
Meteorite Type: Pallasite
CMS 04062 CMS 04067 CMS 04071
CMS 04071 CMS 04074 CMS 04078

Macroscopic Description: Tim McCoy and Linda Welzenbach
These meteorites are pallasites with common exterior morphology and weathering. They range in mass from 8.2 g to 44.7 kg. They all exhibit a very weathered, rusty exterior with extensive removal of olivine, leaving voids that range in size from a few millimeters to many centimeters. The larger cavities probably resulted from extensive olivine removal during physical and chemical weathering and weathering of any residual metallic matrix.

Thin Section (,4) Description: Tim McCoy

CMS 04071 - Reflected Light
Reflected Light
CMS 04071 was selected for examination. This mass is typical of the group in exterior morphology and weathering and of moderate size (2.11 kg). Two slices were cut from the center of the mass, each measuring ~9 cm by 6 cm. These slices exhibit fragmental, angular olivine grains ranging in size from a hundred microns to 2 cm in size. Olivine grains exhibit extensive iron oxide staining, producing olivine grains that range from brown near the margins of the slice to green in the interior. Interstitial to these grains are euhedral and irregular chromites, as well as troilite and schreibersite. Olivine is Fa12 and the texture, mineralogy and even degree of weathering are reminiscent of Imilac. The meteorites are pallasites, probably members of the main group.
Data from:
  Table 4
  Line 30:
Mass (g):8465
Weathering grade:B/C
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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Photographs from AMN:
Photograph from unknown source A photo is in the write-up above


     This is 1 of 43840 approved meteorites from Antarctica (plus 3802 unapproved names)

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