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Northwest Africa 15099
Basic information Name: Northwest Africa 15099
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15099
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 425 g
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 323 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 23 Jul 2022
Writeup from MB 111:

Northwest Africa 15099 (NWA 15099)

(Northwest Africa)

Purchased: 2022 Mar

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by Wenxi Jin from a Moroccan dealer January 2022 and sold to Fujun Ren in March 2022.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia composed of mineral clasts and some lithic clasts in a fine grained matrix. Major minerals are anorthite, olivine, low-Ca pyroxene, pigeonite and Al-Ti-augite (some associated with ilmenite in lithic clasts). Accessory phases include ilmenite, Ti-free chromite, Ti-chromite, troilite, altered kamacite, rare taenite and minor secondary barite. Ilmenite-bearing lithic clasts are a minor component of this dominantly feldspathic breccia.

Geochemistry: Olivine (Fa17.1-33.7, FeO/MnO = 89-104, N = 6), low-Ca pyroxene (Fs27.8-33.2Wo3.7-3.5, FeO/MnO = 53-55, N = 2), pigeonite (Fs20.5-34.4Wo8.0-6.8, FeO/MnO = 52-53, N = 2), Al-Ti-augite (Fs26.5Wo43.3, FeO/MnO = 48, Al2O3 6.5 wt.%, TiO2 6.6 wt.%), anorthite (An95.9-96.7Or0.1, N = 3).

Classification: Lunar (feldspathic breccia).

Specimens: 21.6 g including one polished mount at UWB; remainder with Mr. Fujun Ren.

Data from:
  Table 0
  Line 0:
Place of purchase:China
Date:P 2022 Mar
Mass (g):425
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):17.1-33.7
Ferrosilite (mol%):27.8-33.2; 20.5-34.4
Wollastonite (mol%):3.7-3.5; 8.0-6.8
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):21.6
Type spec location:UWB
Main mass:Fujun Ren
Comments:Work name WZY-105; 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)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
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     This is 1 of 9370 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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