Meteoritical Bulletin: Entry for Northwest Africa 15527

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Northwest Africa 15527

Basic information

Name: Northwest Africa 15527
This is an OFFICIAL meteorite name.
Abbreviation: NWA 15527
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass: 71.45 kg

Classification
history:

Meteoritical Bulletin:	MB 111	(2023)	H5
Recommended:			H5 [explanation]

This is 1 of 11567 approved meteorites (plus 23 unapproved names) classified as H5. [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 2 Jan 2023

Writeup

Writeup from MB 111:

Northwest Africa 15527 (NWA 15527)

(Northwest Africa)

Purchased: 2021 Jan

Classification: Ordinary chondrite (H5)

History: Purchased by Darryl Pitt in January 2021 from a dealer in Erfoud, Morocco.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Sparse relatively small, glass-free chondrules are set in a recrystallized matrix containing stained kamacite, taenite, sodic plagioclase, troilite, chromite, chlorapatite and merrillite.

Geochemistry: Olivine (Fa_18.9±0.2, range Fa_18.6-19.2, N = 8), low-Ca pyroxene (Fs_16.8±0.3Wo_1.3±0.4, range Fs_16.3-17.1Wo_0.8-1.7, N = 7).

Classification: Ordinary chondrite (H5).

Specimens: 39.2 g including one polished thin section at UWB; remainder with DPitt.

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Erfoud
Date:	P 2021 Jan
Mass (g):	71445
Pieces:	1
Class:	H5
Shock stage:	S2
Weathering grade:	W1
Fayalite (mol%):	18.9±0.2
Ferrosilite (mol%):	16.8±0.3
Wollastonite (mol%):	1.3±0.4
Classifier:	A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):	39.2
Type spec location:	UWB
Main mass:	DPitt
Comments:	Work name MVCH 658; submitted by A. Irving

Institutions
and collections

UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)
BrownU: Joseph Boesenberg Brown University Dept of Earth, Environmental and Planetary Sciences (DEEPS) 324 Brook Street Providence, RI 02912 , United States (institutional address; updated 4 Jan 2024)

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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