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Northwest Africa 13521
Basic information Name: Northwest Africa 13521
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13521
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 585 g
Classification
  history:
Recommended:  L5    [explanation]

This is 1 of 7227 approved meteorites (plus 4 unapproved names) classified as L5.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 11 Nov 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13521 (NWA 13521)

(Northwest Africa)

Purchased: 2020

Classification: Ordinary chondrite (L5)

History: Exported from northwest African source in 2019 by Juan Aviles Poblador in Spain before being acquired by Topher Spinnato at the 2020 Tucson Gem and Mineral Show. Later given to Cameron Smith.

Physical characteristics: Single stone with dark-brown fusion crust.

Petrography: (D. Sheikh, FSU) Sample is an ordinary chondrite composed of few blurred chondrules set in a fine-grained recrystallized matrix containing secondary recrystallized plagioclase (35±10 μm). Accessory phases include Fe-Ni metal, troilite, chromite, and iron oxides.

Geochemistry: Olivine (Fa24.1±0.6, range Fa22.7-25.0, n=16), Low-Ca pyroxene (Fs20.5±0.5 Wo1.2±0.2, range Fs19.9-21.1Wo0.9-1.5, n=10).

Classification: Ordinary Chondrite (L5)

Specimens: 20.2 g at UCLA; main mass with Cameron Smith.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Tucson, AZ
Date:P 2020
Mass (g):585
Pieces:1
Class:L5
Shock stage:S3
Weathering grade:W3
Fayalite (mol%):24.1±0.6
Ferrosilite (mol%):20.5±0.5
Wollastonite (mol%):1.2±0.2
Classifier:D. Sheikh, FSU
Type spec mass (g):20.2
Type spec location:UCLA
Main mass:Cameron Smith
Comments:Submitted by Daniel Sheikh
Institutions
   and collections
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
FSU: Department of Geological Sciences, Florida State University, Tallahassee FL 32306-4100, United States (institutional address; updated 16 Dec 2010)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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