Meteoritical Bulletin: Entry for Northwest Africa 14884

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Northwest Africa 14884

Basic information

Name: Northwest Africa 14884
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14884
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass: 243 g

Classification
history:

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

This is 1 of 21 approved meteorites classified as Lunar (bas. breccia). [show all]
Search for other: Lunar meteorites

Comments:

Approved 9 May 2022

Writeup

help

Writeup from MB 111:

Northwest Africa 14884 (NWA 14884)

(Northwest Africa)

Purchased: 2021

Classification: Lunar meteorite (basaltic breccia)

History: The meteorite was purchased from a group of meteorites hunters in Nouadhibou, Mauritania, in 2021.

Physical characteristics: Dark grayish fragment without fusion crust.

Petrography: The meteorite displays a dark brownish interior and is a breccia composed of up to 1 cm sized basaltic and few impact melt clasts set into a fine-grained related and partly shock melted mineral matrix. Basaltic clasts have mostly intersertal and intergranular textures. Dominant minerals are zoned pyroxene, zoned olivine, ferroan and magnesian pigeonite, and calcic plagioclase. Minor phases include ilmenite, troilite, and fayalite. No metal detected. Contains calcite filled veins.

Geochemistry: zoned pyroxene: Fs_59.8±14.4Wo_24.6±5.6(Fs_33.0-80.3Wo_19.0-37.2, FeO/MnO=69±8, n=20); ferroan pigeonite: Fs_73.6±0.7Wo_17.0±0.4(Fs_72.5-74.6Wo_16.5-17.7, FeO/MnO=70±4, n=5); magnesian pigeonite: Fs_27.5±0.2Wo_7.4±0.1(Fs_27.3-27.7Wo_7.3-7.5, FeO/MnO=53±1, n=5); zoned olivine: Fa_31.8±7.0(Fa_25.5-44.7), FeO/MnO=89±8, n=10; calcic plagioclase: An_88.2±1.1(An_87.0-91.4, n=10)

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Nouadhibou, Mauritania
Date:	P 2021
Mass (g):	243
Pieces:	1
Class:	Lunar (bas. breccia)
Shock stage:	moderate
Weathering grade:	moderate
Fayalite (mol%):	31.8
Ferrosilite (mol%):	59.8; 73.6; 27.5
Wollastonite (mol%):	24.6; 17.0; 7.4
Classifier:	A. Greshake, MNB
Type spec mass (g):	21.7
Type spec location:	MNB
Main mass:	Labenne
Comments:	Submitted by Ansgar Greshake

Institutions
and collections

MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Labenne: 23, rue de Esperance, 75013 Paris, France; Website (private address; updated 29 Aug 2012)

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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Geography:

Coordinates:

Unknown.

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

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