Meteoritical Bulletin: Entry for Northwest Africa 15287

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Northwest Africa 15287

Basic information

Name: Northwest Africa 15287
This is an OFFICIAL meteorite name.
Abbreviation: NWA 15287
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass: 1175 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 14 Sep 2022

Writeup

Writeup from MB 111:

Northwest Africa 15287 (NWA 15287)

(Northwest Africa)

Purchased: June 2021

Classification: Ordinary chondrite (L5)

History: Purchased by Julie Michels from Topher Spinnato in June 2021. Later acquired by Jeffrey DeVries.

Physical characteristics: Four stones with dark brown fusion crust.

Petrography: (D. Sheikh, Cascadia) Sample is an ordinary chondrite containing chondrules (~0.6 mm) and sparse lithic clast fragments (mm-sized) set within a fine-grained matrix containing accessory Fe-Ni metal and troilite.

Geochemistry: Olivine (Fa_24.5±1.2, range Fa_22.7-27.9, n=27), Low-Ca Pyroxene (Fs_21.1±1.1Wo_1.0±0.2, range Fs_19.4-23.7Wo_0.5-1.5, n=30).

Classification: Ordinary chondrite (L5).

Specimens: 32.1 g at Cascadia, main mass with Jeffrey DeVries.

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Arizona
Date:	P June 2021
Mass (g):	1175
Pieces:	4
Class:	L5
Shock stage:	S3
Weathering grade:	W3
Fayalite (mol%):	24.5±1.2
Ferrosilite (mol%):	21.1±1.1
Wollastonite (mol%):	1.0±0.2
Classifier:	D. Sheikh, Cascadia
Type spec mass (g):	32.1
Type spec location:	Cascadia
Main mass:	Jeffrey DeVries
Comments:	CML 1555; 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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