Meteoritical Bulletin: Entry for Northwest Africa 13833

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Northwest Africa 13833

Basic information

Name: Northwest Africa 13833
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13833
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass: 65 g

Classification
history:

Meteoritical Bulletin:	MB 110	(2022)	Diogenite-pm
Recommended:			Diogenite-pm [explanation]

This is 1 of 63 approved meteorites classified as Diogenite-pm. [show all]
Search for other: Achondrites, Diogenites, and HED achondrites

Comments:

Approved 23 May 2021

Writeup

Writeup from MB 110:

Northwest Africa 13833 (NWA 13833)

(Northwest Africa)

Purchased: 2019 Sep

Classification: HED achondrite (Diogenite, polymict)

Physical characteristics: Single greenish stone, lacking fusion crust

Petrography: (J. Gattacceca, CEREGE) Brecciated igneous rock with mm-sized lithic and mineral clasts in a clastic matrix. Lithic clasts have intersertal texture. Melt rock clasts are also present. Main minerals are pyroxene (some exsolved) and plagioclase. Other minerals: chromite (to 50 µm), troilite, ilmenite, metal, silica polymorph.

Geochemistry: Low-Ca pyroxene Fs_26.6±2.7Wo_2.2±0.2, FeO/MnO = 33.2±3.5 (n=10). Intersertal eucritic clasts Fs₅₈₆Wo_5.8, FeO/MnO = 31.3 (n=2). Plagioclase An_92.9±1.2Ab_6.9±1.2Or_0.3±0.1(n=4). Chromite Cr# = 0.76 (n=1).

Classification: Achondrite (diogenite, polymict). This contain contains less than 10 vol% of eucrite clasts.

Specimens: Type specimen at CEREGE. Main mass with Kuntz.

Data from:
  MB110
  Table 0
  Line 0:

Date:	P 2019 Sep
Mass (g):	65
Pieces:	1
Class:	Diogenite-pm
Fayalite (mol%):	26.6±2.7 (n=10)
Ferrosilite (mol%):	2.2±0.2
Magnetic suscept.:	3.42
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	13.93
Type spec location:	CEREGE
Main mass:	Kuntz
Finder:	anonymous
Comments:	work name K442; submitted by Jérôme Gattacceca

Institutions
and collections

CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 10 Jun 2023)
Kuntz: Fabien Kuntz, France; Website (private address)

Catalogs:

References:

Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9914 approved meteorites from (Northwest Africa) (plus 1841 unapproved names)

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