Meteoritical Bulletin: Entry for Northwest Africa 13512

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Northwest Africa 13512

Basic information

Name: Northwest Africa 13512
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13512
Observed fall: No
Year found: 2019
Country: Morocco
Mass: 105 g

Classification
history:

Recommended:

Aubrite [explanation]

This is 1 of 67 approved meteorites classified as Aubrite. [show all]
Search for other: Achondrites, Aubrites, Enstatite achondrites, and Enstatite-rich meteorites

Comments:

Approved 23 Jan 2021

Writeup

Writeup from MB 110:

Northwest Africa 13512 (NWA 13512)

Morocco

Purchased: 2019 Dec

Classification: Enstatite achondrite (Aubrite)

History: Three visually-similar specimens (total weight 105 g) found together near Boudnib, Morocco were purchased by Mohammed Hmani in December 2019.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) The specimen has a mean grainsize of ~400 µm and is composed predominantly of equant grains of enstatite with subordinate sodic plagioclase and accessory altered Si-bearing kamacite, altered Cr-troilite and schreibersite.

Geochemistry: Enstatite (Fs_0.2±0.0Wo_0.6-0.7, N = 3), plagioclase (Ab_91.4An_2.6Or_6.0; Ab_76.4An_21.4Or_2.3; N = 2), kamacite (Si = 1.5 wt.%, Ni = 7.9 wt.%).

Classification: Aubrite.

Specimens: 20.5 g including one polished thin section at UWB; remainder with Mr. M. Hmani.

Data from:
  MB110
  Table 0
  Line 0:

Place of purchase:	Boudnib, Morocco
Date:	P 2019 Dec
Mass (g):	105
Pieces:	3
Class:	Aubrite
Shock stage:	low
Weathering grade:	low
Ferrosilite (mol%):	0.2±0.0
Wollastonite (mol%):	0.6-0.7
Classifier:	A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):	20.5
Type spec location:	UWB
Main mass:	M. Hmani
Comments:	Work name MH-Q7; 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)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Hmani: A. Hmani Moroccan Imports, 13 rue Jules Hardouin Mansart, 92600 Asnières, France (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 110, in preparation (2021)

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Geography:

Morocco

Coordinates:

Unknown.

Statistics:
This is 1 of 1611 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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