Meteoritical Bulletin: Entry for Northwest Africa 15604

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Northwest Africa 15604

Basic information

Name: Northwest Africa 15604
This is an OFFICIAL meteorite name.
Abbreviation: NWA 15604
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass: 2.3 kg

Classification
history:

Meteoritical Bulletin:	MB 112	(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 Feb 2023

Writeup

Writeup from MB 112:

Northwest Africa 15604 (NWA 15604)

(Northwest Africa)

Purchased: Aug 2022

Classification: Lunar meteorite (feldspathic breccia)

History: The meteorite was purchased from a group of meteorites hunters in Nouadhibou, Mauritania, in August, 2022.

Physical characteristics: Many brownish fragments without fusion crust.

Petrography: The meteorite is a breccia composed of up to 3 mm sized mineral clasts of anorthite, olivine, low-Ca-pyroxene, and augite plus some melt fragments set in a fine-grained matrix. Minor phases include ilmenite, troilite, and FeNi metal.

Geochemistry: olivine: Fa_21.5±0.4(Fa_20.9-22.1, FeO/MnO=82±7, n=7); ferroan olivine: Fa_31.4±0.2(Fa_31.1-31.7, FeO/MnO=86±6, n=7); low-Ca pyroxene: Fs_23.3±0.6Wo_4.6±0.5(Fs_22.5-24.3Wo_3.9-5.4, FeO/MnO=55±5, n=7); Ca-pyroxene: Fs_18.0±0.8Wo_32.7±1.7(Fs_17.1-19.2Wo_30.6-35.2, FeO/MnO=44±4, n=7); calcic plagioclase: An_96.2±0.5(An_95.2-96.8, n=7)

Data from:
  MB112
  Table 0
  Line 0:

Place of purchase:	Nouadhibou, Mauritania
Date:	P Aug 2022
Mass (g):	2300
Pieces:	many
Class:	Lunar (feldsp. breccia)
Shock stage:	high
Weathering grade:	low
Fayalite (mol%):	21.5; 31.4
Ferrosilite (mol%):	23.3; 18.0
Wollastonite (mol%):	4.6; 32.7
Classifier:	A. Greshake, MNB
Type spec mass (g):	22.2
Type spec location:	MNB
Main mass:	Salamu Ali
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 Meteoritical Bulletin, no. 112, in preparation (2023)

Find references in NASA ADS:
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Photos:

Credit	Photos
Public domain photographs:
Ansgar Greshake

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

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