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Northwest Africa 11302
Basic information Name: Northwest Africa 11302
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11302
Observed fall: No
Year found: 2016
Country: Mali
Mass:help 90 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  Eucrite-unbr
Recommended:  Eucrite-unbr    [explanation]

This is 1 of 92 approved meteorites classified as Eucrite-unbr.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 28 Jun 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11302 (NWA 11302)

Mali

Purchased: 2016 Dec

Classification: HED achondrite (Eucrite, unbrecciated)

History: Purportedly found near Erg Chech, Mali, and puchased by Ben Hoefnagels in December 2016 from a dealer in Marrakech, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Microgabbroic texture. Minerals are exsolved pigeonite, calcic plagioclase, silica polymorph, Ni-free metal, ilmenite, chromite and troilite.

Geochemistry: Orthopyroxene host (Fs60.4-60.7Wo2.1-1.8, FeO/MnO = 28, N = 2), clinopyroxene exsolution lamellae (Fs27.9-28.6Wo41.8-40.8, FeO/MnO = 26-29, N = 2), plagioclase (An89.0-89.4Or0.6-0.4, N = 2).

Classification: Eucrite (unbrecciated, microgabbroic).

Specimens: 18.2 g including one polished thin section at UWB; remainder with Mr. B. Hoefnagels.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Marrakech
Date:P 2016 Dec
Mass (g):90
Pieces:1
Class:Eucrite-unbr
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):60.4-60.7; 27.9-28.6
Wollastonite (mol%):2.1-1.8; 41.8-40.8
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):18.2
Type spec location:UWB
Main mass:B. Hoefnagels
Comments:Work name BH041; submitted by A. Irving
Institutions
   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)
Catalogs:
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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Geography:

Mali
Coordinates:Unknown.

Statistics:
     This is 1 of 33 approved meteorites from Mali (plus 1 unapproved name)

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