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Northwest Africa 10048
Basic information Name: Northwest Africa 10048
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10048
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 352 g
Meteoritical Bulletin:  MB 104  (2015)  Lunar
Recommended:  Lunar    [explanation]

This is 1 of 102 approved meteorites classified as Lunar.   [show all]
Search for other: Lunar meteorites
Comments: Approved 7 Apr 2015
Writeup from MB 104:

Northwest Africa 10048 (NWA 10048)

(Northwest Africa)

Purchased: February 2015

Classification: Lunar meteorite

History: Found in December 2014 near the border of Western Sahara and Algeria.  Purchased in Mauritania in February 2015.

Physical characteristics: Numerous identical pieces without fusion. Saw cuts show only a few scattered feldspathic clasts and metal grains set in a fairly uniform, dark gray, fine-grained matrix.

Petrography: (C. Agee, UNM) This  meteorite is a very fine-grained lunar regolith breccia with some shock melt zones present. Most olivine, pyroxene and plagioclase fragments are less than 50 μm in size. Accessory Fe-Ni metal, iron oxide, chromite, and ilmenite were observed. Thin calcite weathering veins are present.

Geochemistry: (C. Agee and N. Muttik, UNM) olivine Fa31.2±8.3, Fe/Mn=95±12, n=15; pigeonite Fs29.3±6.9Wo10.3±5.4, Fe/Mn=56±5, n=15; augite Fs24.1±7.2Wo30.8±8.8, Fe/Mn=48±3, n=4; plagioclase An96.2±0.5Ab3.3±0.5Or0.4±0.1, n=3; Shock melt (20 μm defocused electron beam, proxy for bulk meteorite composition): SiO2=44.6±0.9, TiO2=0.33±0.07, Al2O3=22.8±2.2, Cr2O3=0.20±0.04, MgO=9.1±1.8, FeO=8.0±1.4, MnO=0.11±0.02, CaO=13.9±1.0, NiO=0.03±0.02, Na2O=0.34±0.03, K2O=0.10±0.02 (all wt%), Fe/Mn=71±7, Mg#=67±5, n=10.

Classification: Lunar, regolith breccia

Specimens: 20.1 g including a probe mount on deposit at UNM, DPitt holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P February 2015
Mass (g):352.3
Shock stage:high
Weathering grade:moderate
Fayalite (mol%):31.2±8.3
Ferrosilite (mol%):29.3±6.9, 24.1±7.2
Wollastonite (mol%):10.3±5.4, 30.8±8.8
Classifier:C. Agee, UNM
Type spec mass (g):20.1
Type spec location:UNM
Main mass:Darryl Pitt
Comments:Field name MAC 115; 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)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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     This is 1 of 9111 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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