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Northwest Africa 11058
Basic information Name: Northwest Africa 11058
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11058
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 3.73 kg
Meteoritical Bulletin:  MB 106  (2018)  Eucrite-unbr
Recommended:  Eucrite-unbr    [explanation]

This is 1 of 120 approved meteorites classified as Eucrite-unbr.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 14 Feb 2017
Writeup from MB 106:

Northwest Africa 11058 (NWA 11058)

(Northwest Africa)

Purchased: 2016 Jun

Classification: HED achondrite (Eucrite, unbrecciated)

History: Purchased by Darryl Pitt in June 2016 from a dealer in Ouarzazate, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Very fine grained, subophitic assemblage of exsolved pigeonite and calcic plagioclase with accessory silica polymorph, ilmenite, Ti-chromite, merrillite and zircon. The specimen is crosscut by thin, dark shock veins and some veinlets of secondary calcite.

Geochemistry: Orthopyroxene host (Fs60.7-61.7Wo2.7-1.8, FeO/MnO = 31, N = 3), clinopyroxene exsolution lamellae (Fs27.2-28.5Wo43.5-41.9, FeO/MnO = 32, N = 2), plagioclase (An89.5-89.6Or0.5-0.4, N = 2).

Classification: Eucrite (unbrecciated).

Specimens: 25.4 g including one polished thin section at UWB; remainder with DPitt.

Data from:
  Table 0
  Line 0:
Place of purchase:Ouarzazate
Date:P 2016 Jun
Mass (g):3731.6
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):60.7-61.7; 27.2-28.5
Wollastonite (mol%):2.7-1.8; 43.5-41.9
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):25.4
Type spec location:UWB
Main mass:DPitt
Comments:MVCH 119; 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 8636 approved meteorites from (Northwest Africa) (plus 1884 unapproved names)

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