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Miller Range 07681
Basic information Name: Miller Range 07681
     This is an OFFICIAL meteorite name.
Abbreviation: MIL 07681
Observed fall: No
Year found: 2007
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 20.7 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 33(1)  (2010)  CV3
Meteoritical Bulletin:  MB 98  (2010)  CV3
Antarctic Meteorite Newsletter:  AMN 46(1)  (2023)  CVoxA3.7
Recommended:  CVoxA3.7    [explanation]

This is 1 of 54 approved meteorites classified as CVoxA3.7.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Field number: 17993
Approved 11 Feb 2010
Revised 27 Mar 2024: Reclassified in AMN 46(1)
Writeuphelp
Writeup from AMN 33(1):
Sample Number MIL 07681
Pairing MIL 07590; MIL 07597; MIL 07669; MIL 07678; MIL 07681; MIL 07683; MIL 07684; MIL 07685; MIL 07690; MIL 07691; MIL 07696; MIL 07699
Newsletter 33,1
Location Miller Range
Field Number 17993
Dimensions 3.0 x 2.5 x 1.5
Weight 20.690
Original Classification CV3 Chondrite
Macroscopic Description - Kathleen McBride and Roger Harrington
The exteriors of these carbonaceous chondrites have brown/black fusion crust with polygonal fractures. The interiors of these meteorites have dark gray to black matrixes with some weathered areas. Most have white and light gray chondrules and inclusions. 07669 has mint green colored evaporates over half of its surface.
Thin Section (,2) Description - Cari Corrigan, Tim McCoy and Linda Welzenbach
The sections are so similar that a single description suffices. The sections exhibit large chondrules (up to 3 mm) and CAIs in a dark matrix. Olivines range from Fa0-64 and low-Ca pyroxene is Fs1-5. The meteorites are unequilibrated carbonaceous chondrites, probably reduced CV3. These are likely paired with the MIL 07671 pairing group previously reported. Pairing of MIL 07690 and MIL 07683 is considered tentative, as the former is dominated by fusion crust and the latter, while similar to other members of the group, lacks metal grains in the thin section examined.
Data from:
  MB98
  Table 2
  Line 524:
Mass (g):20.7
Class:CV3
Weathering grade:B/C
Fayalite (mol%):0-47
Ferrosilite (mol%):5
Classifier:SI
Type spec location:JSC, SI
Main mass:JSC
Comments:Fracturing B
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)
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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' 45"S, 156° 11' 28"E)

Statistics:
     This is 1 of 44400 approved meteorites from Antarctica (plus 3802 unapproved names)
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