Meteoritical Bulletin: Entry for Northwest Africa 15288

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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: 5.8 kg

Classification
history:

Meteoritical Bulletin:	MB 111	(2023)	Lunar (feldsp. breccia)
Recommended:			Lunar (feldsp. breccia) [explanation]

This is 1 of 340 approved meteorites classified as Lunar (feldsp. breccia). [show all]
Search for other: Lunar meteorites

Comments:

Approved 1 Oct 2022

Writeup

help

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 (Fa_22.9±3.6, range Fa_18.6-32.6, Fe/Mn=86±10, n=16), Low-Ca Pyroxene (Fs_20.8±1.0Wo_3.7±0.6, range Fs_19.5-21.8Wo_2.8-4.1, Fe/Mn=49±8, n=4), Pigeonite (Fs_21.5±1.6Wo_14.8±6.4, range Fs_19.1-23.3Wo_7.3-23.3, Fe/Mn=46±7, n=5), Augite (Fs_17.1±5.4Wo_31.5±7.2, range Fs_11.3-21.8Wo_27.3-39.8, Fe/Mn=42±7, n=3), Calcic plagioclase (An_97.1±0.6, range An_95.7-97.9, n=27).

Classification: Lunar (feldspathic fragmental breccia).

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

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Algeria
Date:	P 2021
Mass (g):	5800
Pieces:	1
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

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)
Thompson: Edwin Thompson, 5150 Dawn St., Lake Oswego, OR 97035, United States (private address)

Catalogs:

References:

Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)

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Revision
history:

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