NWA 13278

 

NWA 13278

Found Sahara, 2019

Achondrite

Aubrite

Specimen is a 1.18g slice



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Basic information Name: Northwest Africa 13278 This is an OFFICIAL meteorite name.
Abbreviation: NWA 13278
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass: 564 g
Classification history:
  Meteoritical Bulletin, MB 109 (2021): Aubrite
Recommended: Aubrite
Writeup Writeup from MB 109:

Northwest Africa 13278 (NWA 13278)

(Northwest Africa)

Purchased: 2019 Nov

Classification: Enstatite achondrite (Aubrite)

History: Purchased by Zaid Sbitti in November 2019 from a dealer in Ouargla, Algeria.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia composed of large clasts of enstatite (with diopside exsolution lamellae) and subordinate forsterite set within a finer grained matrix composed of enstatite, sodic plagioclase, Cr-troilite, niningerite and Si-bearing kamacite.

Geochemistry: Enstatite (Fs0.0-0.1Wo0.9-1.1, N = 2), diopside (Fs0.0-0.1Wo44.4-45.8, N = 2), forsterite (Fa0.0±0.0, N = 2), plagioclase (Ab86.1An0.5Or13.4), kamacite (Ni = 3.0 wt.%, Si = 3.1 wt.%), troilite (Cr = 2.8 wt.%).

Classification: Aubrite.

Specimens: 24.7 g in the form of a polished endcut at UWB; remainder held by Mr. L. Ouabicha and Mr. Z. Sbitti.

Data from: MB114
Table 0 Line 0:
Place of purchase: Ouargla, Algeria
Date: P 2019 Nov
Mass (g): 564
Pieces: 1
Class: Aubrite
Shock stage: low
Weathering grade: low
Fayalite (mol%): 0.0±0.0
Ferrosilite (mol%): 0.0-0.1; 0.0-0.1
Wollastonite (mol%): 0.9-1.1; 44.4-45.8
Classifier: A. Irving, UWS, and P. Carpenter, WUSTL
Type spec mass (g): 24.7
Type spec location: UWB
Main mass: L. Ouabicha/Z. Sbitti
Comments: Work name ZS20-CH1; submitted by A. Irving
Institutions and collections
  UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 2023-10-09)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 2012-01-15)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 2011-10-17)

About Us

The WWMeteorites team (for "WorldWide Meteorites" - Meteorites from around the world) was created in 2003 with the primary goal of traveling around globe in search of these fascinating celestial objects, and make them available for Science... and Collectors. Since 2017, the team has established its base camp on the island of Unst (Shetland, UK).

With four or five trips per year on average, the number of finds (in countries as diverse as Tunisia, Spain, Qatar, the Sultanate of Oman ...) has quickly become important. WWMeteorites therefore collaborates with several laboratories that analyze, and classify the new meteorites, mainly the Museum Fur Naturkunde (Berlin), the CEREGE (University of Aix-Marseille), and the Appalacjain State University (North Carolina). WWmeteorites (under the name of its founder, Fabien Kuntz.)  have already more than 500 meteorites listed in the Meteoritical Society Database.

In order to have a classification and an official referencement established, as well as to allow the long-term research on the meteorites, a part of 20% of each find by WWmeteorites is deposited in a lab
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