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Miller Range 090992
Basic information Name: Miller Range 090992
     This is an OFFICIAL meteorite name.
Abbreviation: MIL 090992
Observed fall: No
Year found: 2009
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 4.9 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 35(1)  (2012)  CM1/2
Meteoritical Bulletin:  MB 100  (2012)  CM1/2
Recommended:  CM1/2    [explanation]

This is 1 of 25 approved meteorites classified as CM1/2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 1), CM chondrites, and CM-CO clan chondrites
Comments: Field number: 20358
Approved 25 Feb 2012
Writeuphelp
Writeup from AMN 35(1):
Sample Number MIL 090992
Newsletter 35,1
Location Miller Range
Field Number 20358
Dimensions 2.0 x 1.5 x 1.25
Weight 4.89
Original Classification CM1/2 Chondrites
Pairing MIL 090986; MIL 090992; MIL 090993
Mineral Composition (%Fa &  %Fs)
Fayalite (mol%): 0-52
Weathering
B
Fracturing
B
Macroscopic Description - Kathleen McBride
The exterior of these meteorites range from no fusion crust to 50% dull purplish black fusion crust with polygonal fractures. The interior matrices are black with powdery textures and have oxidation rinds. Small light gray chondrules and clasts are visible.
Thin Section Description (,2) - Cari Corrigan and Linda Welzenbach
The sections consist of a few small chondrules (up to 0.5 mm), mineral grains and CAIs set in a black matrix; rare metal and sulfide grains are present. Olivine compositions are Fa0-56, orthopyroxene is Fs1-9Wo1-4. Aqueous alteration of the matrix is substantial, but the chondrules are only modestly altered. These meteorites are CM1/2 chondrites.
Antarctic Meteorite Images for Sample MIL 090992
Thin Section Photo of Sample MIL 090992 in Plane-Polarized Light with 1.25X Magnification  Thin Section Photo of Sample MIL 090992 in Plane-Polarized Light with 2.5X Magnification  Thin Section Photo of Sample MIL 090992 in Reflected Light with 1.25X Magnification  Thin Section Photo of Sample MIL 090992 in Reflected Light with 2.5X Magnification 
Thin Section Photo of Sample MIL 090992 in Cross-Polarized Light with 1.25X Magnification  Thin Section Photo of Sample MIL 090992 in Cross-Polarized Light with 2.5X Magnification  Lab Photo of Sample MIL 090992 Showing North View 
Data from:
  MB100
  Table 1
  Line 1144:
Date:2009
Mass (g):4.9
Pieces:1
Class:CM1/2
Weathering grade:B
Fayalite (mol%):0-52
Classifier:SI
Type spec mass (g):4.9
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(1) (2012), JSC, Houston
Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
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Geography:

Antarctica
Coordinates:
     Recommended::   (83° 20' 52"S, 156° 17' 2"E)

Statistics:
     This is 1 of 44543 approved meteorites from Antarctica (plus 3802 unapproved names)
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