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Northwest Africa 15520
Basic information Name: Northwest Africa 15520
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15520
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 33.5 g
Classification
  history:
Meteoritical Bulletin:  MB 112  (2023)  Pallasite
Recommended:  Pallasite    [explanation]

This is 1 of 81 approved meteorites classified as Pallasite.   [show all]
Search for other: Metal-rich meteorites, Pallasites
Comments: Approved 23 Feb 2023
Writeuphelp
Writeup from MB 112:

Northwest Africa 15520 (NWA 15520)

(Northwest Africa)

Purchased: 2022 Aug

Classification: Pallasite

History: Purchased by Shun-Chung Yang in August 2022 from a dealer in Laayoune, Morocco.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Coarse grained aggegate of predominantly olivine and metal (both kamacite and taenite) with accessory schreibersite and merrillite.

Geochemistry: Olivine (Fa12.3-12.8, FeO/MnO = 44-55, N = 4).

Classification: Pallasite.

Specimens: 7.1 g in the form of a polished endcut at UWB; remainder with Mr. S.-C. Yang.

Data from:
  MB112
  Table 0
  Line 0:
Place of purchase:Laayoune
Date:P 2022 Aug
Mass (g):33.5
Pieces:2
Class:Pallasite
Shock stage:low
Weathering grade:low
Fayalite (mol%):12.3-12.8
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):7.1
Type spec location:UWB
Main mass:S.-C. Yang
Comments:Work name SCY-84; 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, 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. 112, in preparation (2023)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)
Also see:
  This lists the most popular meteorites among people who looked up this meteorite.
Revision
  history:
  This lists important revisions made to data for this record.

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