Meteoritical Bulletin: Entry for Northwest Africa 13720

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Northwest Africa 13720

Basic information

Name: Northwest Africa 13720
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13720
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass: 143.4 g

Classification
history:

Meteoritical Bulletin:	MB 110	(2022)	Pallasite, PMG
Recommended:			Pallasite, PMG [explanation]

This is 1 of 63 approved meteorites (plus 1 unapproved name) classified as Pallasite, PMG. [show all]
Search for other: Main group pallasites, Metal-rich meteorites, and Pallasites

Comments:

Approved 20 Mar 2021

Writeup

Writeup from MB 110:

Northwest Africa 13720 (NWA 13720)

(Northwest Africa)

Purchased: October 2020

Classification: Pallasite (Main group)

Physical characteristics: A single dark stone. Cut face reveals equivalent amouts of metal and subrounded olivine crystals.

Petrography: (J. Gattacceca, CEREGE) Assemblage of equivalent amount of metal (cm size) and subrounded olivine (600 µm). Other minerals: chromite (to 200 µm), troilite as veins in olivine and along metal grain rims.

Geochemistry: Olivine Fa_13.2±0.1, FeO/MnO = 54.1±3.5 (n=4). Chromite Cr# = 0.91 (n=2).

Classification: Achondrite (pallasite, main group)

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

Data from:
  MB110
  Table 0
  Line 0:

Place of purchase:	Zagora, Morocco
Date:	P October 2020
Mass (g):	143.4
Pieces:	1
Class:	Pallasite, PMG
Weathering grade:	moderate
Fayalite (mol%):	13.2±0.1 (n=4)
Magnetic suscept.:	5.62
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	21.84
Type spec location:	CEREGE
Main mass:	Kuntz
Finder:	anonymous
Comments:	work name K532; 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 9921 approved meteorites from (Northwest Africa) (plus 1838 unapproved names)

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