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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:help 2.3 kg
Classification
  history:
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 312 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 23 Feb 2023
Writeuphelp
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: Fa21.5±0.4 (Fa20.9-22.1, FeO/MnO=82±7, n=7); ferroan olivine: Fa31.4±0.2 (Fa31.1-31.7, FeO/MnO=86±6, n=7); low-Ca pyroxene: Fs23.3±0.6Wo4.6±0.5 (Fs22.5-24.3Wo3.9-5.4, FeO/MnO=55±5, n=7); Ca-pyroxene: Fs18.0±0.8Wo32.7±1.7 (Fs17.1-19.2Wo30.6-35.2, FeO/MnO=44±4, n=7); calcic plagioclase: An96.2±0.5 (An95.2-96.8, 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)
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Photos:
CreditPhotos
Public domain photographs:
Ansgar Greshake   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9042 approved meteorites from (Northwest Africa) (plus 1870 unapproved names)

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