Meteoritical Bulletin: Entry for Northwest Africa 14643

header

MetSoc Home Publications Contacts

Search the Meteoritical Bulletin Database
Last update: 24 Apr 2024
Search for:	Search type:	Search limits:	Display:	Publication:
Names Text Places Classes Years	Contains Starts with Exact Sounds like	NonAntarctic Falls Non-NWAs Has strewnfield		What's new in the last:
Include past classifications in search		Has photo	Limit to approved meteorite names
Search text:

Northwest Africa 14643

Basic information

Name: Northwest Africa 14643
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14643
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass: 882 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 14643 (NWA 14643)

(Northwest Africa)

Purchased: 2021

Classification: HED achondrite (Eucrite, polymict)

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

Physical characteristics: Grayish rock largely covered with fusion crust.

Petrography: The meteorite displays a fresh light grayish interior and is a polymict breccia composed of lithic and mineral clasts set in a fine-grained clastic matrix. Lithic clasts include up to 1.5 cm sized gabbroic, basaltic, and black impact melt clasts. Dominant mineral phases are up to 1 mm sized exsolved pyroxene, compositionally zoned low-Ca pyroxene, and calcic plagioclase grains. Minor phases include silica, chromite, ilmenite, and troilite. No metallic iron detected.

Geochemistry: low-Ca pyroxene: Fs_58.5±0.2Wo_1.5±0.2(Fs_58.2-58.9Wo_1.3-1.9, FeO/MnO=28-34, n=6); augite exsolution lamellae: Fs_29.7±0.9Wo_37.4±0.3(Fs_29.1-31.7Wo_36.9-37.8, FeO/MnO=26-34, n=6); zoned low-Ca pyroxene: Fs_40.8±12.5Wo_2.1±0.1(Fs_25.8-54.1Wo_1.9-2.3, FeO/MnO=29-35, n=4); calcic plagioclase: An_90.3±1.6(An_88.8-92.4, n=7)

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Erfoud, Morocco
Date:	P 2021
Mass (g):	882
Pieces:	1
Class:	Eucrite-pmict
Shock stage:	low
Weathering grade:	low
Ferrosilite (mol%):	58.5; 29.7; 40.8
Wollastonite (mol%):	1.5; 37.4; 2.1
Classifier:	A. Greshake, MNB
Type spec mass (g):	33.4
Type spec location:	MNB
Main mass:	David Göttlich
Comments:	Submitted by Ansgar Greshake

Institutions
and collections

MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 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. ?

Find references in NASA ADS:
Find references in Google Scholar:

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

Direct link to this page