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Miller Range 090112
Basic information Name: Miller Range 090112
     This is an OFFICIAL meteorite name.
Abbreviation: MIL 090112
Observed fall: No
Year found: 2009
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 73.6 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 35(2)  (2012)  Diogenite
Meteoritical Bulletin:  MB 101  (2012)  Diogenite
Recommended:  Diogenite    [explanation]

This is 1 of 441 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Field number: 20360
Approved 4 Sep 2012
Writeuphelp
Writeup from AMN 35(2):
Sample Number MIL 090112
Newsletter 35,2
Location Miller Range
Field Number 20360
Dimensions 4.3 x 3.2 x 3.0
Weight 73.59
Original Classification Diogenite
Pairing MIL 090112, MIL 090291, MIL 11198, MIL 11199, MIL 11202, MIL 11204, MIL 11205
Mineral Composition (%Fa &  %Fs)
Ferrosilite (mol%): 30-34
Weathering
B
Fracturing
A
Macroscopic Description - Kathleen McBride and Cecilia Satterwhite
The exteriors have brown/black fusion crust with polygonal fractures. The interiors of these diogenites have tan matrices with dark gray to black “marbled” areas; some have light and dark inclusions. Some exhibit minor oxidation and rust.
Thin Section Description (,3) - Cari Corrigan, Andrew Beck, and Nicole Lunning
These meteorites are similar enough that one description suffices. The sections show a groundmass of coarse (up to 1.5 mm) comminuted pyroxene, with minor plagioclase, euhedral and chromites. MIL 11202 contains a large (1.5 mm) chromite grain, and MIL 11204 contains a large (2.0 mm) plagioclase grain. Pyroxene compositions are Fs11-35Wo4-44 and plagioclase is An78-87Or0-1. The Fe/Mn ratio of the pyroxene is ~29. The meteorites exhibit numerous shock features and are brecciated diogenites.
Antarctic Meteorite Images for Sample MIL 090112
Lab Group Photo of Sample MIL 090112 Showing South View  Lab Photo of Sample MIL 090112 Showing Splits View  Lab Photo of Sample MIL 090112 Showing Pie Shot View  Lab Group Photo of Sample MIL 090112 Showing North View 
Thin Section Photo of Sample MIL 090112 in Plane-Polarized Light with 1.25X Magnification  Thin Section Photo of Sample MIL 090112 in Reflected Light with 1.25X Magnification  Thin Section Photo of Sample MIL 090112 in Cross-Polarized Light with 1.25X Magnification  Thin Section Photo of Sample MIL 090112 in Plane-Polarized Light with 2.5X Magnification 
Thin Section Photo of Sample MIL 090112 in Reflected Light with 2.5X Magnification  Thin Section Photo of Sample MIL 090112 in Cross-Polarized Light with 2.5X Magnification 
Data from:
  MB101
  Table 0
  Line 0:
Date:2009
Mass (g):73.6
Pieces:1
Class:Diogenite
Weathering grade:B
Ferrosilite (mol%):30-34
Classifier:SI
Type spec mass (g):73.6
Type spec location:JSC
Main mass:JSC
Finder:ANSMET
Comments:Submitted by AMN
Institutions
   and collections
JSC: Mailcode KT, 2101 NASA Parkway, NASA Johnson Space Center, Houston, TX 77058, United States; Website (institutional address; updated 3 Sep 2013)
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' 14"S, 156° 46' 5"E)

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