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Northwest Africa 10599
Basic information Name: Northwest Africa 10599
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10599
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 77.8 g
Meteoritical Bulletin:  MB 105  (2016)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 321 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 11 Apr 2016
Writeup from MB 105:

Northwest Africa 10599 (NWA 10599)

(Northwest Africa)

Purchased: 2015

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased from Youssef Ait El Caid, Morocco, 2015.

Physical characteristics: One piece, no fusion crust, irregular weathered exterior, saw cut reveals prominent white feldspathic clasts set in a dark-gray groundmass.

Petrography: (C. Agee, UNM) Microprobe examination shows a polymict breccia with fragmental plagioclase, pyroxene, and olivine grains, lithic fragments, shock melt domains, and small vesicles. Pyroxenes are subcalcic augite and pigeonite with iron enrichment trends. Most olivine is approximately Fa37 however there were also a few fayalitic olivines (Fa62) observed. Likewise, anorthite is the predominate plagioclase composition, but there were also a few bytownite (An85) grains observed.

Geochemistry: (C. Agee and M. Spilde, UNM). Olivine Fa37.1±2.4, Fe/Mn=95±8, n=7; pigeonite Fs46.3±9.2Wo6.4±1.7, Fe/Mn=65±1, n=3; augite Fs36.5±12.2Wo24.6±2.7, Fe/Mn=59±4, n=3; plagioclase An95.6±1.1, n=4; Shock melt (20 μm defocused electron beam, proxy for bulk meteorite composition): SiO2=44.03±0.87, TiO2=0.50±0.21, Al2O3=26.95±2.82, Cr2O3=0.14±0.04, MgO=5.51±1.57, FeO=6.75±1.84, MnO=0.09±0.03, CaO=15.36±1.12, NiO=0.03±0.02, Na2O=0.54±0.08, K2O=0.09±0.02 (all wt%), FeO/MnO=80±16, n=10.

Classification: Achondrite (lunar feldspathic breccia)

Specimens: A total of 16 g including a probe mount on deposit at UNM. Frank Carroll holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2015
Mass (g):77.8
Class:Lunar (feldsp. breccia)
Shock stage:high
Weathering grade:moderate
Fayalite (mol%):37.1±2.4
Ferrosilite (mol%):46.3±9.2, 36.5±12.2
Wollastonite (mol%):6.4±1.7, 24.6±2.7
Classifier:C. Agee, UNM
Type spec mass (g):16
Type spec location:UNM
Main mass:Frank Carroll
Comments:FC-2; 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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Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Frank Carroll   

     This is 1 of 9305 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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