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Northwest Africa 13408
Basic information Name: Northwest Africa 13408
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13408
Observed fall: No
Year found: 2018
Country: Algeria
Mass:help 2 kg
Classification
  history:
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 329 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 5 Sep 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13408 (NWA 13408)

Algeria

Find: 2018

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased in 2020 by Matthew Stream from Said Bachir in Algeria.

Physical characteristics: Sample contains minor fusion crust. An interior slice reveals an assortment of light and dark-coloured clasts.

Petrography: (D. Sheikh, FSU) Sample is a feldspathic breccia composed primarily of sub-angular anorthitic clasts (<1 cm) set in a dark, fine-grained matrix. Other phases present include pigeonite, olivine, sub-calcic augite, low-Ca pyroxene, and Si-Na-Ca-Mg-rich glass.

Geochemistry: Olivine (Fa57.4±16.5, range Fa45.8-69.0, FeO/MnO=95±5, n=2), Pigeonite (Fs32.0±2.4Wo12.4±3.7, range Fs28.1-34.8Wo8.0-17.2, FeO/MnO=44±3, n=7), Low-Ca Pyroxene (Fs36.7 Wo4.0, FeO/MnO=53, n=1), Sub-Calcic Augite (Fs23.5 Wo31.2, FeO/MnO=38, n=1), Anorthite (An96.5±0.7, range An95.1-97.5, n=24).

Classification: Lunar (feldspathic breccia).

Specimens: 20.81 grams at UCLA; main mass with Matthew Stream.

Data from:
  MB109
  Table 0
  Line 0:
Date:2018
Mass (g):2000
Pieces:12
Class:Lunar (feldsp. breccia)
Shock stage:moderate
Weathering grade:low
Fayalite (mol%):57.4±16.5
Ferrosilite (mol%):36.7, 32.0±2.4, 23.5
Wollastonite (mol%):4.0, 12.4±3.7, 31.2
Classifier:D. Sheikh, FSU
Type spec mass (g):20.81
Type spec location:UCLA
Main mass:Matthew Stream
Comments:Submitted by Daniel Sheikh
Institutions
   and collections		 UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
FSU: Department of Geological Sciences, Florida State University, Tallahassee FL 32306-4100, United States (institutional address; updated 16 Dec 2010)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Domjan Svilkovic   
Eric Escrich      
Robert Smart      
Public domain photographs:
Daniel Sheikh   
Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1315 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters)

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