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Northwest Africa 13036
Basic information Name: Northwest Africa 13036
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13036
Observed fall: No
Year found: 2019
Country: Morocco
Mass:help 1815 g
Classification
  history:
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 208 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 9 Feb 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13036 (NWA 13036)

Morocco

Purchased: 2019 Oct

Classification: Lunar (feldsp. melt breccia)

History: A group of stones found together about 30 km north of Tichia, southern Morocco at 24.502°N, 13.767°W was initially offered by the finders for purchase jointly by Adam Aaronson and Ahmad Bouragaa in December 2019. Although a sample was provided for analysis, the owners and potential buyers of the stones could not reach an agreement. Subsequently in September 2020 Rachid Chaoui and Jaouad Chaoui purchased the entire batch of stones from the finders, and provided the additional type material and GPS coordinates of the find site.

Physical characteristics: The stones (total weight 1815 g) lack fusion crust but have a dark external weathering patina. Interiors are light gray and very fine grained with visible tiny rounded vesicles.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Very fine grained specimen dominated by microvesicular, melt-textured crystalline material surrounding sparse small feldspathic lithic clasts. Minerals are anorthite, olivine, orthopyroxene, subcalcic augite, chromite, troilite and secondary barite.

Geochemistry: Olivine (Fa26.9-36.8, FeO/MnO = 73-93, N = 10), low-Ca  pyroxene (Fs17.4-18.4Wo3.4-5.1, FeO/MnO = 50-58, N = 2), subcalcic augite (Fs23.0Wo20.3, FeO/MnO = 42), anorthite (An95.9-97.5Or0.1, N = 4).

Classification: Lunar (feldspathic melt breccia).

Specimens: 21.6 g including a polished endcut at UWB; remainder with R. Chaoui and J. Chaoui.

Data from:
  MB109
  Table 0
  Line 0:
Origin or pseudonym:Tichiya
Place of purchase:Ouarzazate
Date:P 2019 Oct
Latitude:24.502°N
Longitude:13.767°W
Mass (g):1780
Pieces:many
Class:Lunar (feldsp. melt breccia)
Shock stage:high
Weathering grade:low
Fayalite (mol%):28.6-36.8
Ferrosilite (mol%):17.4; 23.0
Wollastonite (mol%):3.4; 20.3
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):21
Type spec location:UWB
Main mass:R. Chaoui/J. Chaoui
Comments:Work names M2221, AB85, RC140.1; submitted by A. Irving
Institutions
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Geography:

Morocco
Coordinates:
     Recommended::   (24° 30' 7"N, 13° 46' 1"W)

Statistics:
     This is 1 of 1523 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)
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