Meteoritical Bulletin: Entry for Northwest Africa 11013

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Northwest Africa 11013

Basic information

Name: Northwest Africa 11013
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11013
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass: 20.8 g

Classification
history:

Meteoritical Bulletin:	MB 105	(2016)	Martian (nakhlite)
Recommended:			Martian (nakhlite) [explanation]

This is 1 of 32 approved meteorites classified as Martian (nakhlite). [show all]
Search for other: Martian meteorites

Comments:

Approved 17 Dec 2016

Writeup

help

Writeup from MB 105:

Northwest Africa 11013 (NWA 11013)

(Northwest Africa)

Purchased: 2016 Aug

Classification: Martian meteorite (Nakhlite)

History: Puchased by Mendy Ouzillou in August 2016 from a dealer in Ouarzazate, Morocco.

Physical characteristics: Several small, friable, brownish-green stones (total weight 20.81 g). The interiors of all stones are grayish green with interstitial reddish-brown and beige components.

Petrography: (A. Irving and S. Kuehner, UWS) Cumulate texture. Composed mainly of prismatic augite grains (exhibiting two directions of twinning and more ferroan rims) with subordinate ferroan olivine and accessory ferroaugite, ferropigeonite, exsolved Fe-Ti oxide, ulvöspinel and chlorapatite. Interstitial regions are composed of apparently hydrous iron silicate material (red-brown in thin section) resembling chlorophaeite together with laths of both oligoclase and alkali feldspar.

Geochemistry: Olivine (Fa_87.1-89.7, FeO/MnO = 41-42, N = 3), augite (cores Fs_23.5-30.9Wo_39.9-40.0; rim Fs_39.0Wo_40.7; FeO/MnO = 29-34, N = 3), ferroaugite (Fs_44.7Wo_41.3, FeO/MnO = 40), ferropigeonite (Fs_67.7Wo_5.5, FeO/MnO = 31), plagioclase (An_22.5-23.9Or_4.6-4.5, N = 2), alkali feldspar (Ab_60.4Or_37.3An_2.3).

Classification: Martian meteorite (nakhlite). Paired with NWA 10153, NWA 10645, NWA 10659 and NWA 10720.

Specimens: 4.17 g plus one polished thin section at UWB; remainder with Mr. M. Ouzillou.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Ouarzazate
Date:	P 2016 Aug
Mass (g):	20.81
Pieces:	several
Class:	Martian (nakhlite)
Shock stage:	low
Weathering grade:	low
Fayalite (mol%):	87.1-89.7
Ferrosilite (mol%):	23.5-30.9; 44.7; 67.7
Wollastonite (mol%):	39.9-40.0; 41.3; 5.5
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	4.17
Type spec location:	UWB
Main mass:	M. Ouzillou
Comments:	MO16-1; 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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9914 approved meteorites from (Northwest Africa) (plus 1841 unapproved names)

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