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Miller Range 05147
Basic information Name: Miller Range 05147
     This is an OFFICIAL meteorite name.
Abbreviation: MIL 05147
Observed fall: No
Year found: 2005
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 4.9 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 30(2)  (2007)  IIIAB
Recommended:  Iron, IIIAB    [explanation]

This is 1 of 317 approved meteorites classified as Iron, IIIAB.   [show all]
Search for other: IIIAB irons, Iron meteorites, and Metal-rich meteorites
Comments: Field number: 18074
Approved 31 Aug 2007
Writeuphelp
Writeup from AMN 30(2):
Sample No.: MIL 05147
Location: Miller Range
Field No.: 18074
Dimensions (cm):   1.5 x 1.25 x 0.75
Weight (g): 4.850
Meteorite Type:

Iron-IIIAB



Macroscopic Description: Tim McCoy
This small (1.5 x 1.25 x 0.75 mm; 4.85 grams) sample exhibits a bluish-silver exterior reminiscent of both fusion crusted iron (e.g., San Francisco Mts.) and irons which have had the exterior removed as a result of ablation by sand or ice. Numerous large cracks are present and the meteorite has obviously split along one of these fractures, producing a planar boundary which abuts a jagged surface and together which form an indentation into an otherwise rounded specimen.

Thin Section (,2) Description: Tim McCoy
The longitudinal section measures ~7 x 7 mm. One end of the section is rounded and represents the original surface of the meteorite. The opposite end is truncated along a linear edge. The bulk of the meteorite is composed of kamacite with an α2 structure. The section is bounded by a weathered crust that rarely overlies small pockets of fusion crust. Inset from the straight edge of the section and parallel to it at regular spacings of ~2 mm are, first, a taenite lamellae (up to 34 wt.% Ni) ~50 µm in width which contain along its length irregular ~100 µm pockets of taenite and P-rich, Ni-rich melt (28 wt.% Ni, 11 wt.% P) in a eutectic relationship. A further ~2 mm into the meteorite is a fracture, now filled with terrestrial iron hydroxides, that includes larger grains of taenite (up to 23 wt.% Ni). The larger particles, reaching a few hundreds microns, sometimes contain oriented kamacite plates. A representative traverse yields an average composition of 7.2 wt.% Ni, 0.1 wt.% P and 0.6 wt.% Co. The meteorite is an iron and could be related to a number of groups (e.g., IIAB, IIIAB, IAB). The Ni and P concentrations might suggest group IIIAB. It is, however, unlikely that it is representative of the larger mass from which it was derived.



Thin Section Images

Reflected Light
MIL 05147
MIL05147 - Reflected LightMIL05147 - Reflected LightMIL05147 - Reflected Light



Lab Images

MIL 05147

Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 30(2) (2007), JSC, Houston
Published in Meteoritical Bulletin, no. 94, MAPS 43, 1551-1588 (2008)
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Photos:
CreditPhotos
Photographs from AMN:
JSC A photo is in the write-up above
Geography:

Antarctica
Coordinates:
     Recommended::   (83° 23' 39"S, 155° 56' 28"E)

Statistics:
     This is 1 of 40129 approved meteorites from Antarctica (plus 4494 unapproved names)
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