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Northwest Africa 16132
Basic information Name: Northwest Africa 16132
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 16132
Observed fall: No
Year found: 2022
Country: Algeria
Mass:help 7.4 g
Classification
  history:
Recommended:  Lunar (melt breccia)    [explanation]

This is 1 of 24 approved meteorites classified as Lunar (melt breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 29 Sep 2023
Writeuphelp
Writeup from MB 112:

Northwest Africa 16132 (NWA 16132)

Algeria

Find: 2022

Classification: Lunar meteorite (melt breccia)

History: Found in Algeria in 2022 and later purchased by David Fletcher from a meteorite dealer.

Physical characteristics: Two stones with weathered fusion crust.

Petrography: (D. Sheikh, Cascadia) Sample is a breccia comprised of sub-angular mm-sized lithic clasts (primarily anorthositic clasts, but also noritic anorthosites and impact melt clasts) set within a dark, melt-rich matrix containing regions of melt schlieren and brown tinted devitrified glass. Accessory phases identified include SiO2-rich glass, ilmenite, troilite, and Fe-Ni metal.

Geochemistry: Pigeonite (Fs39.4±12.2Wo13.1±5.6, range Fs21.3-57.2Wo5.7-21.7, Fe/Mn=56±6, n=11), High-Ca Pyroxene (Fs17.7±2.2Wo35.2±5.0, range Fs14.5-20.8Wo26.7-39.7, Fe/Mn=49±6, n=7), Calcic Plagioclase (An96.3±0.8, range An94.4-97.4, n=17).

Classification: Lunar (melt breccia).

Specimens: 1.91 g at Cascadia, main mass with David Fletcher.

Data from:
  MB112
  Table 0
  Line 0:
Date:2022
Mass (g):7.4
Pieces:2
Class:Lunar (melt breccia)
Shock stage:high
Weathering grade:moderate
Ferrosilite (mol%):39.4±12.2, 17.7±2.2
Wollastonite (mol%):13.1±5.6, 35.2±5.0
Classifier:D. Sheikh, Cascadia
Type spec mass (g):1.91
Type spec location:Cascadia
Main mass:David Fletcher
Comments:CML 1633; submitted by Daniel Sheikh
Institutions
   and collections		 Cascadia: Cascadia Meteorite Laboratory, Portland State University, Department of Geology, Room 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97201, United States; Website (institutional address; updated 28 Oct 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 112, in preparation (2023)
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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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