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Northwest Africa 16286
Basic information Name: Northwest Africa 16286
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 16286
Observed fall: No
Year found: 2023
Country: (Northwest Africa)
Mass:help 311 g
Classification
  history:
Meteoritical Bulletin:  MB 112  (2024)  Lunar (basalt)
Recommended:  Lunar (basalt)    [explanation]

This is 1 of 30 approved meteorites classified as Lunar (basalt).   [show all]
Search for other: Lunar meteorites
Comments: Approved 3 Jan 2024
Writeuphelp
Writeup from MB 112:

Northwest Africa 16286 (NWA 16286)

(Northwest Africa)

Purchased: 2023 Feb

Classification: Lunar meteorite (basalt)

History: Purchased by Didi Baidari in February 2023 from a dealer in Ouargla, Algeria.

Petrography: (A. Irving, UWS, and J. Boesenberg, BrownU) Olivine-phyric basalt composed of zoned subhedral olivine phenocrysts (up to 0.3 mm long), smaller zoned anhedral clinopyroxene grains (mean size ~0.2 mm) and thin laths of maskelynite (mean length ~0.2 mm) accompanied by accessory ilmenite (as fairly abundant thin, acicular grains), chromite and interstitial glassy mesostasis with quench crystallites.

Geochemistry: Olivine (Fa42.1-60.7, FeO/MnO = 90-114, N = 11), pigeonite (Fs31.1Wo17.4, FeO/MnO = 54), subcalcic augite (Fs30.1Wo26.8, FeO/MnO = 59; Fs25.2-49.0Wo37.1-30.8, FeO/MnO = 51-67, N = 10), subcalcic ferroaugite (Fs65.5-69.1Wo21.1-23.3, FeO/MnO = 78-79, N = 2), maskelynite (An75.4-79.3Or0.8-2.4, N = 6).

Classification: Lunar (mare basalt, olivine-phyric).

Specimens: 25.2 g including one polished thin section at UWB; 169 g with Mr. F. Kuntz; 64 g with Mr. S.-C. Yang; remainder with Mr. D. Baidari.

Data from:
  MB112
  Table 0
  Line 0:
Place of purchase:Ouargla
Date:P 2023 Feb
Mass (g):311
Pieces:3
Class:Lunar (basalt)
Shock stage:high
Weathering grade:low
Fayalite (mol%):42.1-60.7
Ferrosilite (mol%):31.1; 25.2-49.0; 30.1; 65.6-69.1
Wollastonite (mol%):17.4; 37.1-30.8; 26.8; 21.1-23.3
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):25.2
Type spec location:UWB
Main mass:F. Kuntz
Comments:Work name DB-81; 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)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
Kuntz: Fabien Kuntz, France; Website (private address)
BrownU: Brown University Dept of Earth, Environmental and Planetary Sciences (DEEPS) 324 Brook Street Providence, RI 02912 , United States (institutional address; updated 21 Jul 2024)
Catalogs:
References: Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Cartier C., Consolmagno G., Goodrich C., Greshake A., Gross J., Joy K. H., Miao B. and Zhang B. (2024) The Meteoritical Bulletin, no. 112. Meteoritics & Planetary Science 59, 1820–1823. ?
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9914 approved meteorites from (Northwest Africa) (plus 1841 unapproved names)

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