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Northwest Africa 10902
Basic information Name: Northwest Africa 10902
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10902
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 36.3 g
Meteoritical Bulletin:  MB 105  (2016)  Lunar
Recommended:  Lunar    [explanation]

This is 1 of 101 approved meteorites classified as Lunar.   [show all]
Search for other: Lunar meteorites
Comments: Approved 21 Nov 2016
Writeup from MB 105:

Northwest Africa 10902 (NWA 10902)

(Northwest Africa)

Purchased: 2015

Classification: Lunar meteorite

History: Purchased in 2015 by Brahim Tahiri in Morocco and sent to his partner Sean Tutorow for analysis.

Physical characteristics: Two identical appearing stones, irregular exterior, no fusion crust. A saw cut reveals scattered light-gray feldspathic clasts set in a very dark groundmass.

Petrography: (C. Agee, UNM) This is a polymict breccia showing several different textural domains: 1) basaltic clasts with phenocrysts and quench crystals, 2) zones of fragmental plagioclase, olivine, and pyroxene, 3) cataclastic zones of fine-grained silicates, 4) shock melt veins and pockets.

Geochemistry: (C. Agee and M. Spilde, UNM) Olivine Fa43.1±1.1, Fe/Mn=100±3, n=4; pigeonite Fs41.0±8.0Wo16.7±5.7, Fe/Mn=59±5, n=9; augite Fs29.5Wo44.1, Fe/Mn=60, n=1; plagioclase An95.9±0.8, n=4; Shock melt (proxy for bulk meteorite composition): SiO2=44.2±0.7, TiO2=0.36±0.07, Al2O3=24.6±1.5, Cr2O3=0.19±0.04, MgO=8.5±1.0, FeO=8.3±1.0, MnO=0.11±0.02, CaO=13.7±0.7, NiO=0.06±0.05, Na2O=0.36±0.06, K2O=0.10±0.03 (all wt%), n=9.

Classification: Lunar meteorite. Intermediate breccia based on FeO and Al2O3 content.

Specimens: 7.4 g including a probe mount on deposit at UNM, Sean Tutorow holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2015
Mass (g):36.28
Shock stage:high
Weathering grade:moderate
Fayalite (mol%):43.1±1.1
Ferrosilite (mol%):41.0±8.0
Wollastonite (mol%):16.7±5.7
Classifier:C. Agee, UNM
Type spec mass (g):7.4
Type spec location:UNM
Main mass:Sean Tutorow
Comments:Field name G677; submitted by C. Agee, UNM
   and collections
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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