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Northwest Africa 13216
Basic information Name: Northwest Africa 13216
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13216
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 100.2 g
Classification
  history:
Recommended:  Lunar (Feldsp. Breccia)    [explanation]

This is 1 of 201 approved meteorites classified as Lunar (Feldsp. Breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 5 Apr 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13216 (NWA 13216)

Northwest Africa

Purchased: 2019

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased from Morocco October 2019.

Physical characteristics: Eighteen identical appearing pieces. No fusion crust, desert weathered exteriors.

Petrography: (C. Agee, UNM) EPMA images show fragmental breccia of differing grain-size scales. The groundmass is extremely fine-grained with multiple lithologies and single-phase fragments of olivine, pyroxene, and plagioclase. Chromite, spinel, silica, and shock melt were observed.

Geochemistry: (C. Agee, UNM) Olivine Fa31.5±8.8, Fe/Mn=95±12, n=12; pigeonite Fs36.0±13.7Wo11.9±9.6, Fe/Mn=63±13, n=12; plagioclase An96.2±1.2, n=6; shock melt (proxy for bulk composition) SiO2=43.6, TiO2=0.38, Al2O3=28.5, MgO=6.4, FeO=4.6, MnO=0.07, CaO=15.6, Na2O=0.09 (wt%).

Classification: Lunar, feldspathic breccia

Specimens: 20.4 g on deposit at UNM, Larry Atkins holds the main mass.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2019
Mass (g):100.15
Pieces:18
Class:Lunar (Feldsp. Breccia)
Shock stage:high
Weathering grade:moderate
Fayalite (mol%):31.5±8.8
Ferrosilite (mol%):36.0±13.7
Wollastonite (mol%):11.9±9.6
Classifier:C. Agee, UNM
Type spec mass (g):20.4
Type spec location:UNM
Main mass:Larry Atkins
Comments:Field name LA-101; submitted by C. Agee, UNM
Institutions
   and collections
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7385 approved meteorites from (Northwest Africa) (plus 1955 unapproved names)

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