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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 14 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 Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
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 7912 approved meteorites from (Northwest Africa) (plus 1974 unapproved names)

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