Meteoritical Bulletin: Entry for Northwest Africa 12916

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Northwest Africa 12916

Basic information

Name: Northwest Africa 12916
This is an OFFICIAL meteorite name.
Abbreviation: NWA 12916
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass: 2.65 kg

Classification
history:

Meteoritical Bulletin:	MB 108	(2020)	Iron, ungrouped
Recommended:			Iron, ungrouped [explanation]

This is 1 of 146 approved meteorites (plus 1 unapproved name) classified as Iron, ungrouped. [show all]
Search for other: Iron meteorites, Metal-rich meteorites, and Ungrouped irons

Comments:

Approved 20 Oct 2019

Writeup

Writeup from MB 108:

Northwest Africa 12916 (NWA 12916)

(Northwest Africa)

Purchased: 2019 Mar

Classification: Iron meteorite (ungrouped)

Physical characteristics: A single brownish mass. Cut surface reveals fresh metallic interior.

Petrography: Etching of a polished section reveals a finely recrystalized coarse octahedrite structure with grain size about 10 µm. Remnants of swathing kamacite bands are visible.

Geochemistry: (J.T. Wasson, UCLA): INAA data, Ni = 108, Co = 5.19 (both mg/g), Cu = 45, Ga = 4.8, As = 2.57, W= 1.63, Re = 844, Ir = 6.95, Pt = 13.55, Au = 0.48 (all µg/g).

Classification: Iron, ungrouped. Ungrouped designation based on composition; no close compositional relatives among 105 other ungrouped irons.

Specimens: Type specimen (55 g) at CEREGE. Main mass with Albert Jambon.

Data from:
  MB108
  Table 0
  Line 0:

Place of purchase:	Nouakchott
Date:	P 2019 Mar
Mass (g):	2650
Pieces:	1
Class:	Iron, ungrouped
Classifier:	J. Gattacceca, CEREGE, and J.T. Wasson, UCLA
Type spec mass (g):	55
Type spec location:	CEREGE
Main mass:	Albert Jambon
Comments:	work name IK190410; 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)
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9092 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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