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Miller Range 07703
Basic information Name: Miller Range 07703
     This is an OFFICIAL meteorite name.
Abbreviation: MIL 07703
Observed fall: No
Year found: 2007
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 13.6 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 33(1)  (2010)  CM2
Meteoritical Bulletin:  MB 98  (2010)  CM2
Recommended:  CM2    [explanation]

This is 1 of 533 approved meteorites classified as CM2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites
Comments: Field number: 17998
Approved 11 Feb 2010
Writeuphelp
Writeup from AMN 33(1):
Sample Number MIL 07703
Pairing MIL 07497; MIL 07674; MIL 07675; MIL 07680; MIL 07682; MIL 07692; MIL 07703
Newsletter 33,1
Location Miller Range
Field Number 17998
Dimensions 2.5 x 3.0 x 2.0
Weight 13.619
Original Classification CM2 Chondrite
Macroscopic Description - Kathleen McBride and Roger Harrington
The exteriors of these meteorites have purplish black to black fusion crust with polygonal fractures. The interior matrixes range in color from gray to black, fine grained with white and light gray inclusions. Some have rusty areas and some have evaporites.
Thin Section (,2) Description - McCoy, Cari Corrigan, Linda Welzenbach, Karen Stockstill
The sections are so similar that a single description suffices. The sections consist of moderately abundant small chondrules (up to 0.5 mm), mineral grains, and CAIs set in a black matrix; rare metal and sulfide grains are present. Chondrules are very lightly altered. Olivine compositions are Fa0-55 pyroxene is Fs1-5. Aqueous alteration of the matrix is substantial, but the chondrules are only modestly altered. The meteorites are CM2 chondrites.
Antarctic Meteorite Images for Sample MIL 07703
MIL07703,0.jpg 
Data from:
  MB98
  Table 2
  Line 538:
Mass (g):13.6
Class:CM2
Weathering grade:Be
Fayalite (mol%):0-48
Ferrosilite (mol%):
Classifier:SI
Type spec location:JSC, SI
Main mass:JSC
Comments:Fracturing B
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 33(1) (2010), JSC, Houston
Published in Meteoritical Bulletin, no. 98, MAPS 45, 1530-1551 (2010)
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Geography:

Antarctica
Coordinates:
     Recommended::   (83° 22' 7"S, 156° 12' 58"E)

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