Meteoritical Bulletin: Entry for Northwest Africa 1951

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Northwest Africa 1951

Basic information

Name: Northwest Africa 1951
This is an OFFICIAL meteorite name.
Abbreviation: NWA 1951
Observed fall: No
Year found: 2003
Country: (Northwest Africa)
Mass: 17 kg

Classification
history:

Meteoritical Bulletin:	MB 88	(2004)	Mesosiderite-C
MetBase:	v. 7.1	(2006)	Mesosiderite-C
Recommended:			Mesosiderite-C [explanation]

This is 1 of 9 approved meteorites classified as Mesosiderite-C. [show all]
Search for other: Class C mesosiderites, Mesosiderites, and Metal-rich meteorites

Writeup

Writeup from MB 88:

Northwest Africa 1951

Morocco

Purchased 2003 April and May

Mesosiderite

Several stones totaling 17 kg of the same meteorite were purchased in Talsit in 2003 April and May. Classification and mineralogy (A. Jambon and O. Boudouma, UPVI): breccia consisting of orthopyroxene clasts (> 5 mm) and orthopyroxene-rich matrix with rare plagioclase. No lithic plagioclase or olivine clasts were observed. Metal is bimodal, mm-sized large blebs and small spots in matrix. Orthopyroxene, FeO/MnO = 30.4, En₆₈Fs₃₀Wo₂; plagioclase, An_89-92; low-Ni metal; troilite, Ca-phosphate, silica. Mineral modes: metal, 25 vol%, troilite, 5 vol%, plagioclase, ~3 vol%, orthopyroxene, 63.3 vol%. A mesosiderite tentatively assigned to class C as NWA 1827. Pairing of the two was suggested by T. Bunch although NWA 1827 does contain plagioclase clasts. Specimens: type specimen, 35 g, UPVI; main mass, Moroccan Imports Chula Vista Ca.

Data from:
  MB88
  Table 4
  Line 107:

Origin or pseudonym:	Zaje
Place of purchase:	Talsit
Date:	P 5 Apr 2003
Mass (g):	17 kg
Pieces:	several
Class:	Mes
Classifier:	A. Jambon and O. Boudouma, UPVI
Type spec mass (g):	35
Type spec location:	UPVI
Main mass:	Moroccan Imports Chula Vista, CA (USA)

Institutions
and collections

UPVI: Université Pierre et Marie Curie (Paris VI),Case 110, 4 Place Jussieu, 75005 Paris, France (institutional address; updated 5 Oct 2014)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)

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Photos:

Credit	Photos
Photos from the Encyclopedia of Meteorites:
Sergey Vasiliev

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9305 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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