Meteoritical Bulletin: Entry for Northwest Africa 15436

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Northwest Africa 15436

Basic information

Name: Northwest Africa 15436
This is an OFFICIAL meteorite name.
Abbreviation: NWA 15436
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass: 356 g

Classification
history:

Meteoritical Bulletin:	MB 111	(2023)	L5
Recommended:			L5 [explanation]

This is 1 of 8890 approved meteorites (plus 5 unapproved names) classified as L5. [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 12 Nov 2022

Writeup

Writeup from MB 111:

Northwest Africa 15436 (NWA 15436)

(Northwest Africa)

Purchased: 2021 Nov 18

Classification: Ordinary chondrite (L5)

History: Purchased on 2021 Nov 18 by Chris Monk from Younes Chaoui.

Physical characteristics: Single weathered stone with dark-brown fusion crust.

Petrography: (D. Sheikh, Cascadia) Equilibrated ordinary chondrite containing secondary recrystallized feldspar (Av. ~20 μm) and accessory Fe-Ni metal, troilite, and chromite.

Geochemistry: Olivine (Fa_24.7±0.3, range Fa_23.7-25.3, n=28), Low-Ca Pyroxene (Fs_20.8±0.2Wo_1.6±0.4, range Fs_20.4-21.4Wo_1.0-3.1, n=25).

Classification: Ordinary Chondrite (L5).

Specimens: 20.15 g at Cascadia, main mass with Chris Monk.

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Northwest Africa
Date:	P 2021 Nov 18
Mass (g):	356
Pieces:	1
Class:	L5
Shock stage:	S2
Weathering grade:	W3
Fayalite (mol%):	24.7±0.3
Ferrosilite (mol%):	20.8±0.2
Wollastonite (mol%):	1.6±0.4
Classifier:	D. Sheikh, Cascadia
Type spec mass (g):	20.15
Type spec location:	Cascadia
Main mass:	Chris Monk
Comments:	CML 1568; 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 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 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

Also see:

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Revision
history:

This lists important revisions made to data for this record.

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