Meteoritical Bulletin: Entry for Northwest Africa 15018

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Northwest Africa 15018

Basic information

Name: Northwest Africa 15018
This is an OFFICIAL meteorite name.
Abbreviation: NWA 15018
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass: 1200 g

Classification
history:

Meteoritical Bulletin:	MB 111	(2023)	Lunar (feldsp. breccia)
Recommended:			Lunar (feldsp. breccia) [explanation]

This is 1 of 336 approved meteorites classified as Lunar (feldsp. breccia). [show all]
Search for other: Lunar meteorites

Comments:

Approved 23 Jul 2022

Writeup

Writeup from MB 111:

Northwest Africa 15018 (NWA 15018)

(Northwest Africa)

Purchased: Apr 2022

Classification: Lunar meteorite (feldspathic breccia)

History: The meteorite was purchased from a meteorite dealer in Temara, Morocco.

Physical characteristics: Many small grayish fragments without fusion crust.

Petrography: The meteorite displays a dark grayish interior and is a polymict breccia predominantly composed of up to 3 mm sized feldspathic and melt clasts plus mineral fragments consolidated by abundant finely recrystallized feldspathic matrix. Dominant minerals are olivine, augite, pigeonite, and calcic plagioclase. Minor phases are silica, ilmenite and FeS.

Geochemistry: olivine: Fa_27.7±1.7(Fa_26.3-30.6, FeO/MnO=87±4, n=12); augite: Fs_17.4±1.2Wo_34.9±1.4(Fs_15.3-19.1Wo_33.2-37.5, FeO/MnO=47±4, n=9); pigeonite: Fs_25.3±1.6Wo_9.3±2.2(Fs_23.0-28.4Wo_5.9-13.3, FeO/MnO=53±5, n=11); calcic plagioclase: An_97.9±0.1(An_97.6-98.1, n=10)

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Temara, Morocco
Date:	P Apr 2022
Mass (g):	1200
Pieces:	many
Class:	Lunar (feldsp. breccia)
Shock stage:	moderate
Weathering grade:	moderate
Fayalite (mol%):	27.7
Ferrosilite (mol%):	17.4; 25.3
Wollastonite (mol%):	34.9; 9.3
Classifier:	A. Greshake, MNB
Type spec mass (g):	21.6
Type spec location:	MNB
Main mass:	Said Yousfi
Comments:	Submitted by Ansgar Greshake

Institutions
and collections

MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)

Catalogs:

References:

Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?

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Photos:

Credit	Photos
Photos from the Encyclopedia of Meteorites:
Ahmad Fairuz
Sergey Vasiliev
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Cyril Chedoz
Hao Wei Lin
Said Yousfi