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Northwest Africa 15288
Basic information Name: Northwest Africa 15288
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15288
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 5.8 kg
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 1 Oct 2022
Writeup from MB 111:

Northwest Africa 15288 (NWA 15288)

(Northwest Africa)

Purchased: 2021

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by Edwin Thompson in 2021 from a meteorite dealer in Algeria. Later purchased by Paul Stahura.

Physical characteristics: Single stone with no fusion crust observed.

Petrography: (D. Sheikh, Cascadia) Sample is a fragmental breccia consisting of sub-angular to sub-rounded mm-sized lithic and mineral clasts set within a fine-grained plagioclase-rich matrix. Lithic clast lithologies identified in the sample are primarily highland lithologies and include: anorthosites, olivine norites, noritic anorthosites, and anorthositic norites (Stoffler et al., 1980). Accessory phases include Cr-spinel, ilmenite, and SiO2-rich glass.

Geochemistry: Olivine (Fa22.9±3.6, range Fa18.6-32.6, Fe/Mn=86±10, n=16), Low-Ca Pyroxene (Fs20.8±1.0Wo3.7±0.6, range Fs19.5-21.8Wo2.8-4.1, Fe/Mn=49±8, n=4), Pigeonite (Fs21.5±1.6Wo14.8±6.4, range Fs19.1-23.3Wo7.3-23.3, Fe/Mn=46±7, n=5), Augite (Fs17.1±5.4Wo31.5±7.2, range Fs11.3-21.8Wo27.3-39.8, Fe/Mn=42±7, n=3), Calcic plagioclase (An97.1±0.6, range An95.7-97.9, n=27).

Classification: Lunar (feldspathic fragmental breccia).

Specimens: 20.7 g at Cascadia, main mass with Paul Stahura.

Data from:
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021
Mass (g):5800
Class:Lunar (feldsp. breccia)
Shock stage:moderate
Weathering grade:low
Fayalite (mol%):22.9±3.6
Ferrosilite (mol%):20.8±1.0, 21.5±1.6, 17.1±5.4
Wollastonite (mol%):3.7±0.6, 14.8±6.4, 31.5±7.2
Classifier:D. Sheikh, Cascadia
Type spec mass (g):20.7
Type spec location:Cascadia
Main mass:Paul Stahura
Comments:CML 1533; 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)
Thompson: Edwin Thompson, 5150 Dawn St., Lake Oswego, OR 97035, United States (private address)
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
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     This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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