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Northwest Africa 11308
Basic information Name: Northwest Africa 11308
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11308
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 297 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 28 Jun 2017
Writeup from MB 106:

Northwest Africa 11308 (NWA 11308)

(Northwest Africa)

Purchased: 2017 Mar

Classification: Ordinary chondrite (LL7)

History: Purchased by Darryl Pitt in March 2017 from a Mauritanian dealer.

Petrography: (A. Irving and S. Kuehner, UWS) Recrystallized breccia with pervasive poikiloblastic texture and devoid of remnant chondrules. Orthopyroxene oikocrysts enclose small olivine chadacrysts and are accompanied by kamacite, chromite, troilite and chlorapatite.

Geochemistry: Olivine (Fa27.7-29.0, N = 3), orthopyroxene (Fs22.8-23.4Wo3.1-2.6, N = 3), clinopyroxene (Fs9.3-9.4Wo43.43.3-43.2, N = 2).

Classification: Ordinary chondrite (LL7 breccia).

Specimens: 21.2 g including one polished thin section at UWB; remainder with DPitt.

Data from:
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2017 Mar
Mass (g):297.3
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):27.9-29.0
Ferrosilite (mol%):22.8-23.4
Wollastonite (mol%):3.1-2.6
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):21.2
Type spec location:UWB
Main mass:D. Pitt
Comments:Work name MVCH 265; 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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