Meteoritical Bulletin: Entry for Northwest Africa 8480

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Northwest Africa 8480

Basic information

Name: Northwest Africa 8480
This is an OFFICIAL meteorite name.
Abbreviation: NWA 8480
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass: 26.2 g

Classification
history:

Meteoritical Bulletin:	MB 104	(2015)	Iron
Recommended:			Iron [explanation]

This is 1 of 102 approved meteorites (plus 5 unapproved names) classified as Iron. [show all]
Search for other: Iron meteorites, Metal-rich meteorites

Comments:

Approved 23 May 2015

Writeup

help

Writeup from MB 104:

Northwest Africa 8480 (NWA 8480)

(Northwest Africa)

Purchased: 2012 Dec

Classification: Iron meteorite

History: Purchased in Agadir in December 2012

Physical characteristics: A single dark smooth ellipsoidal mass.

Petrography: (J. Gattacceca, CEREGE): Quench texture with dendritic/cellular metallic FeNi set in a troilite matrix. Typical metal islands are 100-150 μm in size. 67 vol% FeNi, 33 vol% FeS. Spherical droplets of phosphates up to 50 μm in diameter. Rare euhedral chromite up to 50 μm.

Geochemistry: Metal Fe₉₃Ni_6.4Co_0.6 (N=5), Co content of metal (0.61 wt%), sulfides Fe_0.50S_0.50 (N=3), chromite Cr#=1.00, FeO/MnO=70 (N=4), phosphate Fe_3.05P_1.95O₈ (N=2).

Classification: Iron. Minimal weathering. This meteorite is probably a nodule from a larger one. Co content of metal and FeO/MnO of chromite are a priori not compatible with provenance from an ordinary chondrite.

Specimens: 5.5 g in CEREGE. Main mass with Labenne.

Data from:
  MB104
  Table 0
  Line 0:

Place of purchase:	Agadir
Date:	P 2012 Dec
Mass (g):	26.2
Pieces:	1
Class:	Iron
Weathering grade:	minimal
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	5.5
Type spec location:	CEREGE
Main mass:	Labenne Luc
Comments:	Submitted by J. 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)
Labenne: 23, rue de Esperance, 75013 Paris, France; Website (private address; updated 29 Aug 2012)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full

Find references in NASA ADS:
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Photos:

Credit	Photos
Public domain photographs:
Jérôme Gattacceca

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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