Meteoritical Bulletin: Entry for Northwest Africa 13839

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Northwest Africa 13839

Basic information

Name: Northwest Africa 13839
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13839
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass: 211 g

Classification
history:

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

This is 1 of 94 approved meteorites classified as Acapulcoite. [show all]
Search for other: Acapulcoite-lodranite family, Acapulcoites, and Primitive achondrites

Comments:

Approved 25 Apr 2021

Writeup

Writeup from MB 110:

Northwest Africa 13839 (NWA 13839)

(Northwest Africa)

Purchased: 2020 Oct

Classification: Primitive achondrite (Acapulcoite)

Physical characteristics: Brownish stone. Interior is dark with metal.

Petrography: (J. Gattacceca, CEREGE) Recrystallized equigranular rock with granoblastic texture. Grain size 250 µm. No relict chondrules were observed. Main minerals are orthopyroxene, olivine, and diopside. Rare sodic plagioclase, with lobate shapes. Opaque minerals are metal and troilite.

Geochemistry: Olivine Fa_3.8, FeO/MnO = 22.8 (n=2). Orthopyroxene Fs_4.6Wo_2.0, FeO/MnO = 12.6 (n=1). Diopside Fs_1.3±0.1Wo_45.4±0.6, Cr₂O₃ 0.20±0.03 wt%, FeO/MnO = 14.0 (n=3). Plagioclase An_21.1Ab_75.7Or_3.2(n=1).

Classification: Primitive achondrite (acapulcoite)

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

Data from:
  MB110
  Table 0
  Line 0:

Place of purchase:	Tindouf, Algeria
Date:	P 2020 Oct
Mass (g):	210.8
Pieces:	1
Class:	Acapulcoite
Weathering grade:	low
Fayalite (mol%):	3.8 (n=2)
Ferrosilite (mol%):	4.6 (n=1)
Wollastonite (mol%):	2.0
Magnetic suscept.:	5.11
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	21.99
Type spec location:	CEREGE
Main mass:	Kuntz
Finder:	anonymous
Comments:	work name K524; 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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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Cute child
Guchen Chen
Qi Lv

Geography:

Coordinates:

Unknown.

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

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