Meteoritical Bulletin: Entry for Northwest Africa 14874

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Northwest Africa 14874

Basic information

Name: Northwest Africa 14874
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14874
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass: 670 g

Classification
history:

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

This is 1 of 522 approved meteorites classified as Diogenite. [show all]
Search for other: Achondrites, Diogenites, and HED achondrites

Comments:

Approved 9 May 2022

Writeup

Writeup from MB 111:

Northwest Africa 14874 (NWA 14874)

(Northwest Africa)

Purchased: 2022 Jan

Classification: HED achondrite (Diogenite)

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

Physical characteristics: Light grayish rock without fusion crust.

Petrography: The meteorite displays an unbrecciated grayish interior and is predominantly composed of up to 5 mm sized interlocking orthopyroxene (56 vol%) and calcic plagioclase (42 vol%) grains with minor Ti-bearing chromite and troilite. Few orthopyroxenes contain blebby augite exsolutions.

Geochemistry: low-Ca pyroxene: Fs_30.8±0.2Wo_3.4±0.4(Fs_30.4-31.2Wo_2.6-3.9, FeO/MnO=24-26, n=12); Ca-pyroxene: Fs_15.9±0.4Wo_39.7±0.4(Fs_15.5-16.6Wo_39.1-40.1, FeO/MnO=19-20, n=6); calcic plagioclase: An_96.1±0.3(An_96.0-96.5, n=11)

Classification: Diogenite (noritic). Anomalous high plagioclase abundance (42 vol%).

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2022 Jan
Mass (g):	670
Pieces:	1
Class:	Diogenite
Shock stage:	low
Weathering grade:	low
Ferrosilite (mol%):	30.8; 15.9
Wollastonite (mol%):	3.4; 39.7
Classifier:	A. Greshake, MNB
Type spec mass (g):	23.8
Type spec location:	MNB
Main mass:	Polandmet - Marcin Cimala
Comments:	Submitted by Ansgar Greshake

Institutions
and collections

MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Polandmet: targoniny 30 43445 Dziegielow Poland, Poland; Website (institutional address; updated 7 May 2021)

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)

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Revision
history:

This lists important revisions made to data for this record.

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