Meteoritical Bulletin: Entry for Northwest Africa 5376

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Northwest Africa 5376

Basic information

Name: Northwest Africa 5376
This is an OFFICIAL meteorite name.
Abbreviation: NWA 5376
Observed fall: No
Year found: 2008
Country: (Northwest Africa)
Mass: 16.3 g

Classification
history:

Meteoritical Bulletin:	MB 111	(2023)	CM2
Recommended:			CM2 [explanation]

This is 1 of 636 approved meteorites classified as CM2. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites

Comments:

Approved 19 Mar 2022

Writeup

Writeup from MB 111:

Northwest Africa 5376 (NWA 5376)

(Northwest Africa)

Purchased: 2008

Classification: Carbonaceous chondrite (CM2)

History: The meteorite was purchased from a local meteorite dealer in Erfoud, Morocco.

Physical characteristics: Dark grayish rock without fusion crust.

Petrography: The meteorite displays an almost black interior and is a brecciated carbonaceous chondrite composed of small (apparent mean diameter about 250 µm) chondrules, chondrule pseudomorphs, mineral fragments, and rare CAIs mostly surrounded by fine-grained dust rims set into abundant fine-grained matrix. Matrix is Fe-rich and contains abundant Fe-sulfides, Ca-carbonates, and fibrous phyllosilicates.

Geochemistry: Matrix analyses yield FeO=33.0±1.4 wt% and an average total of 77.7±2.2 wt% (5 µm defocused beam, N=6), the latter indicating the presence of hydrous minerals. Ca-carbonate contains 0.7 wt% FeO, N=2.

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Erfoud, Morocco
Date:	P 2008
Mass (g):	16.3
Pieces:	1
Class:	CM2
Shock stage:	S2
Weathering grade:	low
Fayalite (mol%):	10.9±13.5 (1.1-39.1, n=19)
Ferrosilite (mol%):	1.3±0.1 (1.1-1.6, n=12)
Wollastonite (mol%):	2.4±1.2 (1.0-3.8, n=12)
Classifier:	A. Greshake, MNB
Type spec mass (g):	3.6
Type spec location:	MNB
Main mass:	Stefan Ralew
Comments:	Submitted by Ansgar Greshake

Institutions
and collections

MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (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:

This lists important revisions made to data for this record.

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