Meteoritical Bulletin: Entry for Northwest Africa 5750

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Northwest Africa 5750

Basic information

Name: Northwest Africa 5750
This is an OFFICIAL meteorite name.
Abbreviation: NWA 5750
Observed fall: No
Year found: 2008
Country: (Northwest Africa)
Mass: 135 g

Classification
history:

Meteoritical Bulletin:	MB 105	(2016)	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

Comments:

Approved 28 Oct 2016

Writeup

Writeup from MB 105:

Northwest Africa 5750 (NWA 5750)

(Northwest Africa)

Purchased: 2008 Dec 12

Classification: Mesosiderite (group C)

History: Purchased from a Moroccan dealer at the mineral fair (CCH) in Hamburg, Germany.

Petrography: (K. Metzler, IfP) Coarse-grained breccia, mainly consisting of orthopyroxenite clasts (up to 2.5 cm) and some plagioclase fragments, embedded in a metal-rich matrix of related debris. Overall metal abundance about 20 vol%; orthopyroxenite clasts contain <5 vol% metal. Plagioclase abundance <10 vol%.

Geochemistry: Plagioclase composition: An_94.3±1.6(92.3-97.4; n=16)

Classification: Mesosiderite based on texture, metal abundance and mineral chemistry. Type C mesosiderite based on low abundance of plagioclase (<10 vol%) and high abundance of low-Ca pyroxene.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Hamburg
Date:	P 2008 Dec 12
Mass (g):	135
Pieces:	1
Class:	Mesosiderite-C
Shock stage:	low
Weathering grade:	low
Ferrosilite (mol%):	28.2±1.1 (26.7-30.6; n=22)
Classifier:	A. Bischoff, IfP
Type spec mass (g):	20
Type spec location:	IfP
Main mass:	anonymous
Comments:	Submitted by K. Metzler (IfP)

Institutions
and collections

IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full

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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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