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Northwest Africa 11968
Basic information Name: Northwest Africa 11968
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11968
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 428 g
Classification
  history:
Recommended:  Lunar (Feldsp. Breccia)    [explanation]

This is 1 of 161 approved meteorites classified as Lunar (Feldsp. Breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 23 Sep 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11968 (NWA 11968)

(Northwest Africa)

Purchased: 2015

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by Jay Piatek from Adam Aaronson in Morocco, 2015.

Physical characteristics: Single stone. Fresh, light green-brown fusion crust covers a significant part of the surface; the remainder of the exterior is a smooth, lustrous black color. Saw cut reveals a fragmental breccia with many white feldspathic clasts set in a dark gray ground mass.

Petrography: (C. Agee, UNM) This meteorite is a breccia of fragmental pyroxene, olivine, plagioclase grains set in a fine-grained matrix. Fe-metal, chromite, ilmenite, and troilite were detected.

Geochemistry: (C. Agee, UNM) Olivine Fa: 37.4±9.5, Fe/Mn=92±5, n=8; low-Ca pyroxene Fs36.1±3.5Wo5.4±1.3, Fe/Mn=54±0, n=2; high-Ca pyroxene Fs19.9±2.3Wo33.3±9.3, Fe/Mn=49±4, n=3; plagioclase An95.7±1.4, n=4; Shock melt (20 μm defocused electron beam, proxy for bulk meteorite composition): SiO2=43.7±1.0, TiO2=0.20±0.11, Al2O3=30.7±3.6, Cr2O3=0.07±0.05, MgO=4.0±2.2, FeO=4.6±2.4, MnO=0.07±0.05, CaO=16.7±1.8, Na2O=0.34±0.09, K2O=0.05±0.02 (all wt%), n=12.

Classification: Lunar feldspathic breccia

Specimens: 20.0 g including a probe mount on deposit at UNM, Jay Piatek holds 407.8 g.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2015
Mass (g):427.8
Pieces:1
Class:Lunar (Feldsp. Breccia)
Shock stage:high
Weathering grade:low
Fayalite (mol%):37.4±9.5
Ferrosilite (mol%):36.1±3.5, 19.9±2.3
Wollastonite (mol%):5.4±1.3, 33.3±9.3
Classifier:C. Agee, UNM
Type spec mass (g):20
Type spec location:UNM
Main mass:Jay Piatek
Comments:Field name M1820; submitted by C. Agee, UNM
Institutions
   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)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, in preparation (2018)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6551 approved meteorites from (Northwest Africa) (plus 2022 unapproved names)

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