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Northwest Africa 13898
Basic information Name: Northwest Africa 13898
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13898
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 4.95 kg
Classification
  history:
Recommended:  Diogenite-olivine    [explanation]

This is 1 of 17 approved meteorites classified as Diogenite-olivine.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 28 Aug 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13898 (NWA 13898)

(Northwest Africa)

Purchased: 2020

Classification: HED achondrite (Diogenite, olivine)

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

Physical characteristics: (Ziyao Wang) 2 yellow-brown fragile fragments of 2147 and 2708 g plus 95 g of many small fragments below 5 g, totaling 4950 g. The broken faces present recognizable crystal faces. Partly covered by brownish fusion crust.

Petrography: (R. Bartoschewitz, Bart) gabbroic texture of orthopyroxene and olivine (px:ol~3:2 by IR-spectroscopy) with chromite up to 1 mm and troilite.

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Pyroxene Fs22-25Wo2-1, FeO/MnO=28 (n=7); olivine Fo73,FeO/MnO=45 (n=5); chromite CRAL=77, FFM=82 (n=5); troilite Co=0.1 wt%. Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10-9 m3/kg) = 4.02

Classification: Diogenite, olivine-bearing

Specimens: 27.7 g at Kiel, Ziyao Wang hold the main mass, and 210 g with Bart.

Data from:
  MB110
  Table 0
  Line 0:
Origin or pseudonym:desert
Place of purchase:Guelmim,Morocco
Date:P 2020
Mass (g):4950
Pieces:many
Class:Diogenite-olivine
Fayalite (mol%):26.8±0.2 (n=5)
Ferrosilite (mol%):22.6±0.9 (n=7)
Wollastonite (mol%):1.7±0.2
Magnetic suscept.:4.02
Classifier:R. Bartoschewitz
Type spec mass (g):27.7
Type spec location:Kiel
Main mass:Ziyao Wang
Finder:anonymous
Comments:working name WZD#25; 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)
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
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Ziyao Wang         
Public domain photographs:
Rainer Bartoschewitz   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8777 approved meteorites from (Northwest Africa) (plus 1879 unapproved names)

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