Meteoritical Bulletin: Entry for Northwest Africa 5375

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Northwest Africa 5375

Basic information

Name: Northwest Africa 5375
This is an OFFICIAL meteorite name.
Abbreviation: NWA 5375
Observed fall: No
Year found: 2008
Country: (Northwest Africa)
Mass: 24.6 g

Classification
history:

Meteoritical Bulletin:	MB 111	(2023)	Eucrite-pmict
Recommended:			Eucrite-pmict [explanation]

This is 1 of 409 approved meteorites classified as Eucrite-pmict. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 19 Feb 2022

Writeup

help

Writeup from MB 111:

Northwest Africa 5375 (NWA 5375)

(Northwest Africa)

Purchased: 2008

Classification: HED achondrite (Eucrite, polymict)

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

Physical characteristics: Grayish rock partly covered with fusion crust.

Petrography: Polymict breccia composed of up to 4 mm sized fine-grained granular clasts set in a coarse-grained basaltic groundmass. Main minerals are up to 1 mm sized exsolved pyroxene, zoned low-Ca pyroxene, and calcic plagioclase. Minor phases include silica, chromite, and FeS. No metallic iron detected.

Geochemistry: low-Ca pyroxene host to exsolution lamellae: Fs_55.8±1.7Wo_2.5±0.8(Fs_54.3-59.0Wo_1.1-3.3, FeO/MnO=29-31, n=7); augite exsolution lamellae: Fs_15.5±0.1Wo_43.7±0.2(Fs_15.3-15.7Wo_43.5-44.0, FeO/MnO=24-28, n=7); zoned low-Ca pyroxene: Fs_47.6±5.6Wo_2.4±0.1(Fs_40.2-53.9Wo_2.2-2.5, FeO/MnO=30-35, n=7); calcic plagioclase: An_91.6±0.4(An_91.0-92.3, n=7)

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Erfoud, Morocco
Date:	P 2008
Mass (g):	24.6
Pieces:	1
Class:	Eucrite-pmict
Shock stage:	high
Weathering grade:	low
Ferrosilite (mol%):	55.8; 15.5; 47.6
Wollastonite (mol%):	2.5; 43.7; 2.4
Classifier:	A. Greshake, MNB
Type spec mass (g):	5.4
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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