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Northwest Africa 15521
Basic information Name: Northwest Africa 15521
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15521
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 1001 g
Recommended:  CVox3    [explanation]

This is 1 of 29 approved meteorites classified as CVox3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 7 Jan 2023
Writeup from MB 112:

Northwest Africa 15521 (NWA 15521)

(Northwest Africa)

Purchased: 2022 Feb

Classification: Carbonaceous chondrite (CVox3)

History: Purchased by Quanming Lu in February 2022 from a dealer in Agadir, Morocco.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well-formed unequilibrated chondrules (some with multiple rims; apparent diameter 1310±790 µm, N = 25) plus relatively large irregularly-shaped, very fine grained CAI and some AOA are set in a fine grained matrix (~30 %, deep red-brown in thin section) containing augite, pentlandite, troilite, taenite and minor Cr-bearing magnetite. Mineral phases in CAI include anorthite, spinel, olivine and diopside.

Geochemistry: Olivine (Fa17.1±14.4, range Fa2.4-38.7, N = 11), low-Ca pyroxene (Fs1.0±0.3Wo1.0±0.2, range Fs0.8-1.3Wo0.8-1.3, N = 3), diopside (Fs0.8±0.3Wo37.6±3.2, range Fs0.5-1.2Wo35.4-41.3, N =3), magnetite (Cr2O3 0.6-1.9 wt.%, N = 6).

Classification: Carbonaceous chondrite (CVox3).

Specimens: 22.4 g including one polished thin section at UWB; remainder with Quanming Lu.

Data from:
  Table 0
  Line 0:
Place of purchase:Agadir
Date:P 2022 Feb
Mass (g):1000.8
Shock stage:low
Weathering grade:low
Fayalite (mol%):17.1±14.4
Ferrosilite (mol%):1.0±0.3
Wollastonite (mol%):1.0±0.2
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):22.4
Type spec location:UWB
Main mass:Quanming Lu
Comments:Work name LQ22-1; submitted by A. Irving
   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)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
References: Published in Meteoritical Bulletin, no. 111, in preparation (2023)
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     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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