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Northwest Africa 11072
Basic information Name: Northwest Africa 11072
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11072
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 138.5 g
Meteoritical Bulletin:  MB 106  (2018)  LL3
Recommended:  LL3    [explanation]

This is 1 of 371 approved meteorites classified as LL3.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 20 Jan 2017
Writeup from MB 106:

Northwest Africa 11072 (NWA 11072)

(Northwest Africa)

Purchased: 2016 Nov

Classification: Ordinary chondrite (LL3)

History: Purportedly found near Adrar, Algeria, in October 2016, and purchased by Darryl Pitt in November 2016 from a dealer in Mauritania.

Petrography: (A. Irving and S. Kuehner, UWS) Fairly closely packed, well-formed chondrules (apparent diameter 400±300 µm) are set in a fine grained matrix containing altered metal.

Geochemistry: Olivine (Fa2.8-60.1, Cr2O3 in ferroan examples 0.04-0.12 wt.%, mean 0.11±0.05 wt.%, N = 7), orthopyroxene (Fs2.5-11.2Wo0.4-1.5, N = 3), subcalcic augite (Fs2.1Wo30.3), diopside (Fs2.8Wo39.1). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.06.

Classification: Ordinary chondrite (LL3).

Specimens: 20.4 g including one polished thin section at UWB; remainder with DPitt.

Data from:
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2016 Nov
Mass (g):138.5
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):2.8-60.1
Ferrosilite (mol%):2.5-11.2
Wollastonite (mol%):0.4-1.5
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.4
Type spec location:UWB
Main mass:DPitt
Comments:MVCH 216; submitted by A. Irving
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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     This is 1 of 7912 approved meteorites from (Northwest Africa) (plus 1974 unapproved names)

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