Meteoritical Bulletin: Entry for Northwest Africa 12915

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Northwest Africa 12915

Basic information

Name: Northwest Africa 12915
This is an OFFICIAL meteorite name.
Abbreviation: NWA 12915
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass: 2.9 kg

Classification
history:

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

This is 1 of 151 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 12915 (NWA 12915)

(Northwest Africa)

Purchased: 2019

Classification: Iron meteorite (ungrouped)

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

Petrography: Etching of a polished section reveals a plessitic octahedrite structure with finger plessite. One 100 µm × 1 mm polycristalline troilite grain is visible on the studied 1.5 cm2 section.

Geochemistry: (J.T. Wasson, UCLA): INAA data, Ni = 203, Co = 4.72 (both mg/g), Cu = 1090, Ga = 1.2, As = 15.8, W= 0.12, Re <28, Ir = 0.26, Pt = 2.07, Au = 2.91 (all µg/g). The Cu content is unusually high.

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

Specimens: Type specimen (33.7 g) at CEREGE. Main mass with Albert Jambon.

Data from:
  MB108
  Table 0
  Line 0:

Place of purchase:	Nouakchott
Date:	P 2019
Mass (g):	2898
Pieces:	3
Class:	Iron, ungrouped
Classifier:	J. Gattacceca, CEREGE, and J.T. Wasson, UCLA
Type spec mass (g):	33.7
Type spec location:	CEREGE
Main mass:	Albert Jambon
Comments:	work name IK190212a; 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)
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 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

Also see:

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Revision
history:

This lists important revisions made to data for this record.

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