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Northwest Africa 11075
Basic information Name: Northwest Africa 11075
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11075
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 1206 g
Meteoritical Bulletin:  MB 106  (2018)  LL7
Recommended:  LL7    [explanation]

This is 1 of 78 approved meteorites classified as LL7.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 3 Mar 2017
Writeup from MB 106:

Northwest Africa 11075 (NWA 11075)

(Northwest Africa)

Purchased: 2016 Nov

Classification: Ordinary chondrite (LL7)

History: Purchased by Darryl Pitt in November 2016 from a dealer in Mauritania.

Petrography: (A. Irving and S. Kuehner, UWS) Breccia consisting of angular clasts exhibiting poikiloblastic textures. Chadacrysts of olivine are enclosed in oikocrysts of orthopyroxene accompanied by accessory clinopyroxene, sodic plagioclase (to 200 μm), chromite, chlorapatite, kamacite and troilite. No chondrules were observed in the studied section.

Geochemistry: Olivine (Fa28.3-29.8, N = 3), orthopyroxene (Fs22.9-23.2Wo3.4-3.3, N = 3), clinopyroxene (Fs11.0-11.5Wo41.3-40.3, N = 2).

Classification: Ordinary chondrite (LL7 breccia).

Specimens: 24.5 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):1205.8
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):28.3-29.8
Ferrosilite (mol%):22.9-23.2
Wollastonite (mol%):3.4-3.3
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):24.5
Type spec location:UWB
Main mass:DPitt
Comments:MVCH 223; 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 8025 approved meteorites from (Northwest Africa) (plus 1951 unapproved names)

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