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Northwest Africa 11512
Basic information Name: Northwest Africa 11512
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11512
Observed fall: No
Year found: 2017
Country: Morocco
Mass:help 6.85 kg
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  Eucrite-unbr
Recommended:  Eucrite-unbr    [explanation]

This is 1 of 95 approved meteorites classified as Eucrite-unbr.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 6 Dec 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11512 (NWA 11512)

Morocco

Purchased: 2017 Aug

Classification: HED achondrite (Eucrite, unbrecciated)

History: Purportedly found in southern Morocco and purchased by Darryl Pitt in June 2017 from a dealer in Mauritania.

Petrography: (A. Irving and S. Kuehner, UWS) Microgabbroic texture. Composed predominantly of exsolved pigeonite and calcic plagioclase (mean grainsize 0.8 mm) with subordinate silica polymorph and accessory ilmenite, Ti-poor chromite, Ti-rich chromite, troilite, baddeleyite and Ni-free metal.

Geochemistry: Orthopyroxene host (Fs59.1-59.2Wo2.3-2.2, FeO/MnO = 29-30, N = 2, clinopyroxene exsolution lamellae (Fs27.4-28.1Wo41.3-40.3, FeO/MnO = 28-31, N = 2), plagioclase (An87.89.7Or0.5-0.3, N = 2).

Classification: Eucrite (unbrecciated, microgabbroic).

Specimens: 30.87 g including one polished thin section at UWB; remainder with DPitt.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2017 Aug
Mass (g):6850
Pieces:many
Class:Eucrite-unbr
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):59.1-59.2; 27.4-28.1
Wollastonite (mol%):2.3-2.2; 41.3-40.3
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):30.87
Type spec location:UWB
Main mass:DPitt
Comments:Work name MVCH 310; 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)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)
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.
Find references in NASA ADS:
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1417 approved meteorites from Morocco (plus 15 unapproved names) (plus 1 impact crater)

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