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Miller Range 090640
Basic information Name: Miller Range 090640
     This is an OFFICIAL meteorite name.
Abbreviation: MIL 090640
Observed fall: No
Year found: 2009
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 1.3 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 35(2)  (2012)  Howardite
Meteoritical Bulletin:  MB 101  (2012)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 453 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Field number: 20427
Approved 4 Sep 2012
Writeuphelp
Writeup from AMN 35(2):
Sample Number MIL 090640
Newsletter 35,2
Location Miller Range
Field Number 20427
Dimensions 1.5 x 1.0 x 0.5
Weight 1.27
Original Classification Howardite
Mineral Composition (%Fa &  %Fs)
Ferrosilite (mol%): 23-60
Weathering
Be
Fracturing
A
Macroscopic Description - Cecilia Satterwhite
The exterior has a shiny black patch of fusion crust. The interior is a gray matrix with some light and dark inclusions. Some oxidation and minor evaporites are visible.
Thin Section Description (,2) - Cari Corrigan, Andrew Beck, and Nicole Lunning
The section shows a groundmass of comminuted pyroxene and plagioclase (up to 0.5 mm) with diogenite and cumulate eucrite clasts ranging up to 3 mm. Most of the pyroxene is orthopyroxene with compositions ranging from Fs23-60Wo2-41 (most Wo2-10). This meteorite is a howardite.
Antarctic Meteorite Images for Sample MIL 090640
Lab Photo of Sample MIL 090640 Showing Post-Processing View  Lab Group Photo of Sample MIL 090640 Showing North View  Thin Section Photo of Sample MIL 090640 in Plane-Polarized Light with 1.25X Magnification  Thin Section Photo of Sample MIL 090640 in Reflected Light with 1.25X Magnification 
Thin Section Photo of Sample MIL 090640 in Cross-Polarized Light with 1.25X Magnification  Thin Section Photo of Sample MIL 090640 in Plane-Polarized Light with 2.5X Magnification  Thin Section Photo of Sample MIL 090640 in Reflected Light with 2.5X Magnification  Thin Section Photo of Sample MIL 090640 in Cross-Polarized Light with 2.5X Magnification 
Data from:
  MB101
  Table 0
  Line 0:
Date:2009
Mass (g):1.3
Pieces:1
Class:Howardite
Weathering grade:Be
Ferrosilite (mol%):23-60
Classifier:SI
Type spec mass (g):1.3
Type spec location:JSC
Main mass:JSC
Finder:ANSMET
Comments:Submitted by AMN
Institutions
   and collections		 JSC: Mailcode XI, 2101 NASA Parkway, NASA Johnson Space Center, Houston, TX 77058, United States; Website (institutional address; updated 28 Jul 2022)
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° 17' 21"S, 155° 48' 18"E)

Statistics:
     This is 1 of 44248 approved meteorites from Antarctica (plus 3802 unapproved names)
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