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Miller Range 090930
Basic information Name: Miller Range 090930
     This is an OFFICIAL meteorite name.
Abbreviation: MIL 090930
Observed fall: No
Year found: 2009
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 150 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 35(2)  (2012)  Iron, IVA
Meteoritical Bulletin:  MB 101  (2012)  Iron, IVA
Recommended:  Iron, IVA    [explanation]

This is 1 of 80 approved meteorites (plus 1 unapproved name) classified as Iron, IVA.   [show all]
Search for other: Iron meteorites, IVA irons, and Metal-rich meteorites
Comments: Field number: 20169
Approved 4 Sep 2012
Writeuphelp
Writeup from AMN 35(2):
Sample Number MIL 090930
Newsletter 35,2
Location Miller Range
Field Number 20169
Dimensions 6.0 x 3.0 x 2.0
Weight 150.04
Original Classification Iron-IVA
Weathering
B
Fracturing
A
Macroscopic Description - Tim McCoy and Linda Welzenbach
This irregularly-shaped iron exhibits one flattened side, with the other side having two concave surfaces meeting at a ridge and tapering to one end of the meteorite. Rust halos are present, with extensive rusting, including flaking of the surface.
Thin Section Description - Tim McCoy and Linda Welzenbach
The section samples a portion of an interior slice, including the surface of the sample. No fusion crust remains on the meteorite; although a thin (1.5 mm) discolored heat-altered zone is present. This small meteorite is comprised of 5-6 primary austenite crystals, with boundaries between crystals now defined by 100 micrometer thick irregular ribbons of kamacite. The bulk of the meteorite exhibits a plessitic to regular micro-Widmanstätten structure with occasional kamacite platelets and abundant rhabdite phosphides. A microprobe traverse finds kamacite, zoned taenite with rim compositions up to 30 wt.% Ni, and rare Ni-rich (45 wt.%) phosphides. The bulk composition is approximately 9.7 wt.% Ni, 0.6 wt.% Co and 0.2 wt.% P. The meteorite is a Ni-rich ataxite and chemically and structurally similar to some high-Ni IVA irons. Given the compositional similarity to MIL 090564, pairing should be considered, although differences in structure argue against this.
Antarctic Meteorite Images for Sample MIL 090930
Thin Section Photo of Sample MIL 090930 in Plane-Polarized Light with 2.5X Magnification  Thin Section Photo of Sample MIL 090930 in Plane-Polarized Light with 2.5X Magnification  Thin Section Photo of Sample MIL 090930 in Plane-Polarized Light with 5X Magnification  Thin Section Photo of Sample MIL 090930 in Plane-Polarized Light with 5X Magnification 
Lab Photo of Sample MIL 090930 Showing East View  Lab Photo of Sample MIL 090930 Showing West View  Lab Photo of Sample MIL 090930 Showing Top View  Lab Photo of Sample MIL 090930 Showing North View 
Lab Photo of Sample MIL 090930 Showing South View 
Data from:
  MB101
  Table 0
  Line 0:
Date:2009
Mass (g):150.0
Pieces:1
Class:Iron, IVA
Weathering grade:A
Classifier:SI
Type spec mass (g):150.0
Type spec location:SI
Main mass:SI
Finder:ANSMET
Comments:Submitted by AMN
Institutions
   and collections
SI: Department of Mineral Sciences, NHB-119, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, United States; Website (institutional address; updated 16 Jan 2012)
Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 35(2) (2012), JSC, Houston
Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015
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Geography:

Antarctica
Coordinates:
     Recommended::   (83° 24' 42"S, 156° 31' 48"E)

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
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