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Northwest Africa 12790
Basic information Name: Northwest Africa 12790
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12790
Observed fall: No
Year found: 2019
Country: Mauritania
Mass:help 17.6 g
Classification
  history:
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 312 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 23 Feb 2023
Writeuphelp
Writeup from MB 112:

Northwest Africa 12790 (NWA 12790)

Mauritania

Purchased: 2019

Classification: Lunar meteorite (feldspathic breccia)

History: (Ziyao Wang) Purchased by Ziyao Wang from Fayssal Mezgouri in Agadir, Morocco, Apr 2019.

Physical characteristics: (Ziyao Wang) 7 gray-black stones totaling 17.6 g, without fusion crust

Petrography: (R. Bartoschewitz, Bart) fine-grained, melt-textured breccia consisting of mineral fragments (olivine, pyroxene, plagioclase; accessory chromite, ilmenite, troilite, metal) and lithic clasts (gabbroic, anorthositic, melt-rock).

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine Fa26.1±6.0, Fe/Mn=89 (n=6); low Ca pyroxene Fs19.7±2.3Wo3.8±0.7, Fe/Mn=48 (n=4); pigeonite En69Fs23Wo8 (n=1); augite En47Fs14Wo39 (n=1); plagioclase An93-97Or<2 (n=17); chromite CRAL70, FFM72 (n=1); ilmenite. Kamacite Ni=7.6, Co=0.5 wt% (n=1); troilite; pyrrhotite. Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10-9 m3/kg) = 2.37.

Classification: Lunar (feldspatic melt-breccia)

Specimens: 3.58 g on deposit at Kiel, Wang Ziyao holds the main mass, and 2 g with Bart.

Data from:
  MB112
  Table 0
  Line 0:
Origin or pseudonym:desert
Place of purchase:Agadir, Morocco
Date:P 2019
Mass (g):17.6
Pieces:7
Class:Lunar (feldsp. breccia)
Fayalite (mol%):26.1±6.0 (n=6)
Ferrosilite (mol%):19.7±2.3 (n=4)
Wollastonite (mol%):Wo3.8±0.7
Magnetic suscept.:2.37
Classifier:R. Bartoschewitz
Type spec mass (g):3.58
Type spec location:Kiel
Main mass:Ziyao Wang
Finder:anonymous
Comments:working name WZ124; submitted by R. Bartoschewitz
Institutions
   and collections		 Kiel: Geologisches und Mineralogisches Museum, Institut für Geowissenschaften, Christian-Albrechts-Universität Kiel, Ludewig-Mayn-Str. 10, D-24118 Kiel, Germany, Germany (institutional address; updated 13 Sep 2013)
Bart: Bartoschewitz Meteorite Laboratory, Weiland 37, D-38518 Gifhorn, Germany; Website (private address; updated 30 Nov 2019)
Catalogs:
References: Published in Meteoritical Bulletin, no. 112, in preparation (2023)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Ziyao Wang            
Geography:

Mauritania
Coordinates:Unknown.

Statistics:
     This is 1 of 192 approved meteorites from Mauritania (plus 1 unapproved name) (plus 2 impact craters)

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