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Northwest Africa 13893
Basic information Name: Northwest Africa 13893
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13893
Observed fall: No
Year found: 2020
Country: Morocco
Mass:help 75 g
Classification
  history:
Meteoritical Bulletin:  MB 110  (2022)  LL-melt rock
Recommended:  LL-melt rock    [explanation]

This is 1 of 12 approved meteorites classified as LL-melt rock.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 28 Aug 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13893 (NWA 13893)

Morocco

Purchased: 2020

Classification: Ordinary chondrite (LL, melt rock)

History: (Ziyao Wang) Purchased by Ziyao Wang from Hamza Lharbi in Guelmim in Apr. 2020.

Physical characteristics: (Ziyao Wang) 75 g gray-black stone with some fusion crust

Petrography: (R. Bartoschewitz, Bart) chondrule relicts, olivine grains and metal-sulfide assemblages with rusty halos set in a recrystallized melt matrix (av. grain size 50 µm) dominated by olivine.

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine Fa27.0-28.1 (n=16); low-Ca pyroxene Fs22.8-23.4Wo2.1-2.4 (n=2); Ca-pyroxene En67Fs19Wo14 (n=1); chromite CRAL=84-87, FFM=86-89; troilite, taenite. Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10-9 m3/kg) = 4.50.

Classification: Ordinary chondrite (LL melt)

Specimens: 15.1 g on deposit at IfP, Ziyao Wang holds the main mass, and 5.5 g with Bart.

Data from:
  MB110
  Table 0
  Line 0:
Origin or pseudonym:desert
Place of purchase:Guelmim, Morocco
Date:P 2020
Mass (g):75
Pieces:1
Class:LL-melt rock
Weathering grade:W1
Fayalite (mol%):27.5±0.3 (n=16)
Ferrosilite (mol%):23.1±0.4 (n=2)
Wollastonite (mol%):2.2±0.3
Magnetic suscept.:4.50
Classifier:R. Bartoschewitz
Type spec mass (g):15.1
Type spec location:IfP
Main mass:Ziyao Wang
Finder:anonymous
Comments:working name WZ168; submitted by R. Bartoschewitz
Institutions
   and collections		 IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
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)
Catalogs:
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Photos:
CreditPhotos
Public domain photographs:
Rainer Bartoschewitz   
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater)
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Revision
  history:
  This lists important revisions made to data for this record.

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