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Northwest Africa 15377
Basic information Name: Northwest Africa 15377
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15377
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 209 g
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 12 Nov 2022
Writeup from MB 111:

Northwest Africa 15377 (NWA 15377)

(Northwest Africa)

Purchased: 2021

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by Craig Zlimen from a meteorite dealer in Algeria in 2021.

Physical characteristics: Sample contains minor fusion crust.

Petrography: (D. Sheikh, Cascadia) Specimen is a polymict breccia comprised of mm-sized lithic and monomineralic clasts set within a dark, finer-grained fragmental matrix. Lithic clast lithologies identified include: anorthosites, troctolites, olivine norites, noritic anorthosites, and impact-melt-rich clasts. Accessory phases include ilmenite, spinel (some Cr-rich), SiO2-rich glass, and chromite (some Ti-rich).

Geochemistry: Olivine (Fa22.4±9.7, range Fa10.9-44.4, Fe/Mn=84±12, n=30), Low-Ca Pyroxene (Fs23.1±10.2Wo3.6±0.8, range Fs13.1-36.5Wo2.1-4.5, Fe/Mn=50±6, n=9), Pigeonite (Fs31.8±6.3Wo8.9±3.6, range Fs26.2-39.9Wo5.6-14.7, Fe/Mn=51±4, n=5), High-Ca Pyroxene (Fs17.4±10.8Wo39.4±3.8, range Fs7.2-35.1Wo33.8-42.9, Fe/Mn=41±9, n=5), Calcic Plagioclase (An96.0±0.7, range An94.6-97.3, n=30).

Classification: Lunar (feldspathic fragmental breccia).

Specimens: 20.2 g at Cascadia, main mass with Craig Zlimen.

Data from:
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021
Mass (g):209
Class:Lunar (feldsp. breccia)
Shock stage:high
Weathering grade:low
Fayalite (mol%):22.4±9.7
Ferrosilite (mol%):23.1±10.2, 31.8±6.3, 17.4±10.8
Wollastonite (mol%):3.6±0.8, 8.9±3.6, 39.4±3.8
Classifier:D. Sheikh, Cascadia
Type spec mass (g):20.2
Type spec location:Cascadia
Main mass:Craig Zlimen
Comments:CML 1534; submitted by Daniel Sheikh
   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)
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
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     This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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