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Northwest Africa 10461
Basic information Name: Northwest Africa 10461
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10461
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 286 g
Meteoritical Bulletin:  MB 105  (2016)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 340 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 13 Jan 2016
Writeup from MB 105:

Northwest Africa 10461 (NWA 10461)

(Northwest Africa)

Purchased: 2015 Aug

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by Jean Redelsperger from Aziz Habibi in Agadir, Morocco, August 2015. Reportedly found near the border with Mauritania.

Physical characteristics: Two identical appearing pieces 233.8 g and 51.95 g, with irregular exterior, no fusion crust. A saw cut reveals a polymict breccia with numerous fragmental light and dark clasts.

Petrography: (C. Agee, UNM) This breccia has numerous fragmental olivine, pyroxene, and plagioclase grains. There are also microgabbro clasts scattered throughout, as well as shock melt veins and pockets.

Geochemistry: (C. Agee and M. Spilde, UNM) Olivine Fa26.8±8.5, Fe/Mn=93±9, n=23; low-Ca pyroxene Fs31.9±9.5Wo4.6±2.8, Fe/Mn=58±6, n=16; augite Fs23.4±10.5Wo34.6±9.8, Fe/Mn=53±10, n=10; plagioclase An96.1±0.5, n=19; Shock melt (20 μm defocused electron beam, proxy for bulk meteorite composition): SiO2=43.3±0.4, TiO2=0.19±0.05, Al2O3=28.9±2.5, Cr2O3=0.10±0.03, MgO=6.5±2.5, FeO=4.3±1.3, MnO=0.06±0.02, CaO=16.1±1.4, NiO=0.01±0.01, Na2O=0.35±0.02, K2O=0.04±0.01 (all wt%), n=10.

Classification: Lunar (feldspathic breccia)

Specimens: 20.11 g including a probe mount on deposit at UNM, Jean Redelsperger holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Agadir, Morocco
Date:P 2015 Aug
Mass (g):285.75
Class:Lunar (feldsp. breccia)
Shock stage:high
Weathering grade:moderate
Fayalite (mol%):26.8±8.5
Ferrosilite (mol%):31.9±9.5, 23.4±10.5
Wollastonite (mol%):4.6±2.8, 34.6±9.8
Classifier:C. Agee, UNM
Type spec mass (g):20.11
Type spec location:UNM
Main mass:Jean Redelsperger
Comments:Submitted by C. Agee
   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 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)

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