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Northwest Africa 11333
Basic information Name: Northwest Africa 11333
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11333
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 56 kg
Classification
  history:
Recommended:  Ureilite    [explanation]

This is 1 of 531 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 21 Mar 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 11333 (NWA 11333)

(Northwest Africa)

Purchased: 2017 Mar

Classification: Ureilite

History: Purchased in Foum Zguid, Morocco by Mohamed Aid in March 2017.

Physical characteristics: Large (56 kg) specimen lacking fusion crust.

Petrography: (A. Irving and S. Kuehner, UWS) Protogranular assemblage of olivine (~65 vol.%, with reduced metal-bearing rims) and twinned pigeonite (~35 vol.%). No carbon phases were detected.

Geochemistry: Olivine (cores Fa14.4-14.5; rim Fa9.1; N = 3), pigeonite (Fs12.2-12.3Wo8.1-8.0, N = 2). Mafic silicate compositions are unusually magnesian in comparison to the majority of ureilite specimens.

Classification: Ureilite.

Specimens: 25.2 g including one polished thin section at UWB; remainder with M. Aid.


Writeup from MB 109:

Northwest Africa 11333 (NWA 11333)

(Northwest Africa)

Purchased: 2017 Mar

Classification: Ureilite

History: Purchased in Foum Zguid, Morocco, by Mohamed Aid in March 2017.

Physical characteristics: Large (56 kg) specimen lacking fusion crust.

Petrography: (A. Irving and S. Kuehner, UWS) Protogranular assemblage of olivine (~65 vol.%, with reduced metal-bearing rims) and twinned pigeonite (~35 vol.%). No carbon phases were detected.

Geochemistry: Olivine (cores Fa14.4-14.5; rim Fa9.1; N = 3), pigeonite (Fs12.2-12.3Wo8.1-8.0, N = 2). Mafic silicate compositions are unusually magnesian in comparison to the majority of ureilite specimens.

Classification: Ureilite.

Specimens: 25.2 g including one polished thin section at UWB; remainder with M. Aid.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Foum Zguid
Date:P 2017 Mar
Mass (g):56000
Pieces:1
Class:Ureilite
Shock stage:low
Weathering grade:low
Fayalite (mol%):14.4-14.5; 9.1
Ferrosilite (mol%):12.2-12.3
Wollastonite (mol%):8.1-8.0
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):25.2
Type spec location:UWB
Main mass:M. Aid
Comments:Work name MA 201; 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 Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7354 approved meteorites from (Northwest Africa) (plus 1958 unapproved names)

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