Meteoritical Bulletin: Entry for Northwest Africa 13837

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Northwest Africa 13837

Basic information

Name: Northwest Africa 13837
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13837
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass: 20.3 g

Classification
history:

Meteoritical Bulletin:	MB 110	(2022)	Lunar (troct)
Recommended:			Lunar (troct) [explanation]

This is 1 of 3 approved meteorites classified as Lunar (troct). [show all]
Search for other: Lunar meteorites

Comments:

Approved 25 Apr 2021

Writeup

Writeup from MB 110:

Northwest Africa 13837 (NWA 13837)

(Northwest Africa)

Purchased: 2020 Oct

Classification: Lunar meteorite (troctolite)

Physical characteristics: Brownish stone. Interior is almost black.

Petrography: (J. Gattacceca, CEREGE) Granular igneous rock with grain size 600 µm. The main mineral is olivine. Other minerals are pyroxene and plagioclase, accessory chromite and ilmenite (to 200 µm), minor troilite (100 µm) and kamacite (to 50 µm).

Geochemistry: Olivine Fa_37.8±2.6, FeO/MnO 111.2±18.4 (n=6). Pyroxene Fs_28.8±6.7Wo_14.7±9.5, FeO/MnO = 64.4±7.5 (n=4). Plagioclase An_84.8±5.1Ab_13.8±3.8Or_1.4±1.4(n=8). Chromite Cr# = 0.77 (n=1).

Classification: Achondrite (lunar troctolite)

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

Data from:
  MB110
  Table 0
  Line 0:

Place of purchase:	Guelmin, Morocco
Date:	P 2020 Oct
Mass (g):	20.31
Pieces:	7
Class:	Lunar (troct)
Weathering grade:	low
Fayalite (mol%):	37.8±2.6 (n=6)
Magnetic suscept.:	3.01
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	4.22
Type spec location:	CEREGE
Main mass:	Kuntz
Finder:	anonymous
Comments:	work name K509; 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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