Meteoritical Bulletin: Entry for Northwest Africa 14736

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Northwest Africa 14736

Basic information

Name: Northwest Africa 14736
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14736
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass: 340 g

Classification
history:

Recommended:

Iron, IAB-MG [explanation]

This is 1 of 119 approved meteorites classified as Iron, IAB-MG. [show all]
Search for other: IAB complex irons, Iron meteorites, and Metal-rich meteorites

Comments:

Approved 26 Mar 2022

Writeup

Writeup from MB 111:

Northwest Africa 14736 (NWA 14736)

(Northwest Africa)

Purchased: 2021 Mar

Classification: Iron meteorite (IAB-MG)

Petrography: (J. Gattacceca, CEREGE) Iron meteorite with coarse octahedrite structure. Average kamacite bandwidth 1.8±0.5 mm. Multiple sets of Neumann bands are visible. No silicate inclusions were observed.

Geochemistry: XRF measurement of a polished cut surface gives Ni 7.73 wt% and Co 0.50 wt%. (V. Debaille, ULB) Composition of the metal (ICP-MS) is Co=0.44 wt%, Cr=7.0±0.13, Cu=118.5±1.2, Ga=71.0±2.0, As=9.94±0.26, Mo=6.81±0.05, Pd=4.07±0.03, Ir=2.11±0.10, and Au=1.14±0.06 (all in ppm ± 1 sigma). Ge was not measured.

Classification: Iron (IAB complex, main group). The Au content is slightly lower than for IAB iron meteorites, which is interpreted as an underestimation of Au by the ICP-MS method.

Specimens: Type specimen at CEREGE. Main mass with Kuntz

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Tindouf, Algeria
Date:	P 2021 Mar
Mass (g):	339.6
Pieces:	1
Class:	Iron, IAB-MG
Weathering grade:	low
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	23.4
Type spec location:	CEREGE
Main mass:	Kuntz
Finder:	anonymous
Comments:	work name K542; 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)
ULB: Université libre de Bruxelles Avenue Franklin Roosevelt 50 - 1050 Bruxelles, Belgium (institutional address; updated 27 Sep 2018)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 111, in preparation (2022)

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 8509 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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