Meteoritical Bulletin: Entry for Northwest Africa 11973

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Northwest Africa 11973

Basic information

Name: Northwest Africa 11973
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11973
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass: 335 g

Classification
history:

Meteoritical Bulletin:	MB 107	(2018)	H~5
Recommended:			H~5 [explanation]

This is 1 of 192 approved meteorites classified as H~5. [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 2 Sep 2018

Writeup

Writeup from MB 107:

Northwest Africa 11973 (NWA 11973)

(Northwest Africa)

Purchased: Nov 2015

Classification: Ordinary chondrite (H~5)

History: Purchased by Li Bofang from a Moroccan dealer at the mineral show in Beijing in Nov. 2015.

Physical characteristics: 344.8 g stone, about 70% of the surface is covered with yellowish oxidized crust; light-gray interior with many chondrules and metal specks. Some cracks are partly filled yellow colored adherent soil-like material.

Petrography: (R. Bartoschewitz, Bart, B. Li, Beijing) cut surface shows recrystallized matrix with chondrules of 0.2-1.0 mm (av. 0.6 mm), about 30% of chondrules are well defined.

Geochemistry: (R. Bartoschewitz, Bart) Magnetic susceptibility log χ (× 10^-9 m³/kg) = 5.01.

Classification: ordinary chondrite (H~5)

Specimens: 25.3 g on deposit at Kiel, B. Li holds the main mass and 40 g with Bart.

Data from:
  MB107
  Table 0
  Line 0:

Place of purchase:	Beijing
Date:	P Nov 2015
Mass (g):	334.8
Pieces:	1
Class:	H~5
Weathering grade:	W2
Magnetic suscept.:	5.01
Classifier:	R. Bartoschewitz, B. Li
Type spec mass (g):	25.3
Type spec location:	Kiel
Main mass:	Li Bofang, Beijing
Finder:	anonymous
Comments:	NWA-LB001; submitted by R. Bartoschewitz

Institutions
and collections

Kiel: Geologisches und Mineralogisches Museum, Institut für Geowissenschaften, Christian-Albrechts-Universität Kiel, Ludewig-Mayn-Str. 10, D-24118 Kiel, Germany, Germany (institutional address; updated 13 Sep 2013)
Bart: Bartoschewitz Meteorite Laboratory, Weiland 37, D-38518 Gifhorn, Germany; Website (private address; updated 30 Nov 2019)
Beijing: Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China (institutional address; updated 16 Oct 2011)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)

Also see:

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Revision
history:

This lists important revisions made to data for this record.

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