Meteoritical Bulletin: Entry for Northwest Africa 7386

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Northwest Africa 7386

Basic information

Name: Northwest Africa 7386
This is an OFFICIAL meteorite name.
Abbreviation: NWA 7386
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass: 131 g

Classification
history:

Meteoritical Bulletin:	MB 101	(2012)	Mesosiderite
Recommended:			Mesosiderite [explanation]

This is 1 of 273 approved meteorites classified as Mesosiderite. [show all]
Search for other: Mesosiderites, Metal-rich meteorites

Comments:

Approved 8 Nov 2012

Writeup

Writeup from MB 101:

Northwest Africa 7386 (NWA 7386)

(Northwest Africa)

Purchased: 2011 Jul 18

Classification: Mesosiderite

History: The stones were purchased in Erfoud, Morocco, in 2011.

Physical characteristics: Three stones totalling 131 g.

Petrography: (J. Gattacceca, CEREGE) The stony part shows a cataclastic texture, with silicate mineral fragments up to several mm in a coarse matrix (>20 µm). Modal abundances: pyroxene 47%, plagioclase 15%, FeNi metal + troilite + weathering products 37%. Chromite, ilmenite, and silica are present. Magnetic suscpetibility log χ = 4.96 (X in 10-9 m3/kg).

Geochemistry: Orthopyroxene Fs_30.2Wo_2.5(FeO/MnO=25.6). Plagioclase An_95.6Ab_4.3Or_0.1.Chromite Cr/(Cr+Al)= 0.82.

Classification: Mesosiderite. Severe weathering.

Specimens: 23 g and one polished section are on deposit at CEREGE. P. Thomas holds the main mass.

Data from:
  MB101
  Table 0
  Line 0:

Place of purchase:	Erfoud
Date:	P 2011 Jul 18
Mass (g):	131
Pieces:	3
Class:	Mesosiderite
Weathering grade:	Severe
Ferrosilite (mol%):	30.2±1.7
Wollastonite (mol%):	2.6±0.9
Magnetic suscept.:	4.96
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	23
Type spec location:	CEREGE
Main mass:	P. Thomas
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)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015

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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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