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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:help 335 g
Meteoritical Bulletin:  MB 107  (2018)  H~5
Recommended:  H~5    [explanation]

This is 1 of 182 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 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:
  Table 0
  Line 0:
Place of purchase:Beijing
Date:P Nov 2015
Mass (g):334.8
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
Comments:NWA-LB001; submitted by R. Bartoschewitz
   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)
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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