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:

Recommended:

Pallasite, PMG [explanation]

This is 1 of 50 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 29 Oct 2018)
Kuntz: Fabien Kuntz, France; Website (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 110, in preparation (2021)

Find references in NASA ADS:
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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 8559 approved meteorites from (Northwest Africa) (plus 1896 unapproved names)

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