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Northwest Africa 13890
Basic information Name: Northwest Africa 13890
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13890
Observed fall: No
Year found: 2019
Country: Morocco
Mass:help 350 g
Classification
  history:
Recommended:  Diogenite-pm    [explanation]

This is 1 of 49 approved meteorites classified as Diogenite-pm.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 28 Aug 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13890 (NWA 13890)

Morocco

Purchased: 2019

Classification: HED achondrite (Diogenite, polymict)

History: (Ziyao Wang) Purchased by Weijiang from a Moroccan dealer at the China Mineral & Gem Show in Beijing City in Nov. 2019

Physical characteristics: (Ziyao Wang) one irregularly shaped stone of 350 g with recognizable brecciated structure on the surface, without fusion crust

Petrography: (R. Bartoschewitz, Bart) lithic clasts of diogenite (dominated by orthopyroxene and minor noritic) and rare basaltic eucrite (~5 vol%), and mineral fragments are set in a fine-grained, dark, clastic matrix

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) low-Ca pyroxene Fs23-40Wo2-4, FeO/MnO=31 (n=47); pigeonite En37-38Fs51-57Wo5-12 (n=5); augite En43Fs13Wo44 (n=1); olivine Fo70,FeO/MnO=54 (n=1); feldspar An85-94Or<1.4 (n=10); chromite CRAL=67-82, FFM=82-97 (n=12); silica, ilmenite, troilite, kamacite (N9=0.1-5.5,Co=0.2-1.1 wt%, n=5). Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10-9 m3/kg) = 3.89

Classification: Diogenite, polymict

Specimens: 20.2 g on deposit at IfP, Ziyao Wang holds the main mass, and 54 g with Bart.

Data from:
  MB110
  Table 0
  Line 0:
Origin or pseudonym:desert
Place of purchase:Beijing, China
Date:P 2019
Mass (g):350
Pieces:1
Class:Diogenite-pm
Weathering grade:low
Fayalite (mol%):29.5 (n=1)
Ferrosilite (mol%):29.3±7.8 (n=47)
Wollastonite (mol%):2.5±0.7
Magnetic suscept.:3.89
Classifier:R. Bartoschewitz
Type spec mass (g):20.2
Type spec location:IfP
Main mass:Weijiang and Ziyao Wang
Finder:anonymous
Comments:working name WZ164; 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)
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. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Public domain photographs:
Rainer Bartoschewitz   
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1680 approved meteorites from Morocco (plus 25 unapproved names) (plus 1 impact crater)

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