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Northwest Africa 12308
Basic information Name: Northwest Africa 12308
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12308
Observed fall: No
Year found: 2018
Country: Morocco
Mass:help 57.8 g
Classification
  history:
Recommended:  EL3    [explanation]

This is 1 of 24 approved meteorites classified as EL3.   [show all]
Search for other: EL chondrites, Enstatite chondrites, Enstatite chondrites (type 3), and Enstatite-rich meteorites
Comments: Approved 6 Oct 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12308 (NWA 12308)

Morocco

Purchased: 2018

Classification: Enstatite chondrite (EL3)

History: (Ziyao Wang) Purchased by Ziyao Wang from Fayssal Mezgouri during the China (Hubei) Mineral & Gem Show in Huangshi City in Sept 2018.

Physical characteristics: (Ziyao Wang) 57.8 g brown-black round stone with recognizable chondrules on the surface

Petrography: (R. Bartoschewitz, Bart) well-defined chondrules (0.2-2.4 mm, av. 0.7 mm) of various types and chondrule fragments are set in black matrix.

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine Fa0.2±0.1 (n=3); pyroxene Fs1.3±0.7Wo0.3±0.1 (n=13); chromite CRAL100, FFM100; SiO2. Kamacite Ni=6.4, Co=0.6, Si=0.5 (n=32); troilite Cr=0.9, Ti=0.2 (n=19); alabandite Fe=13 (n=1) (all wt-%); daubreelite, oldhamite. Magnetic susceptibility log χ (× 10-9 m3/kg) = 5.45

Classification: Enstatite chondrite, EL3 (EL3a according to the scheme of Weyrauch et al., 2018).

Specimens: 11.8 g on deposit at Kiel, Ziyao Wang holds the main mass, and 10 g with Bart. Polished thin sections Bart and IfP

Bibliography:
  • Weyrauch M., Horstmann M., and Bischoff A. (2017) Chemical variations of sulfides and metal in enstatite chondrites—Introduction of a new classification scheme. 53, 394-415. (link)
Data from:
  MB108
  Table 0
  Line 0:
Origin or pseudonym:desert
Place of purchase:Chenzhou, Hunan
Date:P 2018
Mass (g):57.8
Pieces:1
Class:EL3
Weathering grade:W0
Fayalite (mol%):0.2±0.1 (n=3)
Ferrosilite (mol%):1.3±0.7 (n=13)
Wollastonite (mol%):0.3±0.1
Magnetic suscept.:5.38
Classifier:R. Bartoschewitz
Type spec mass (g):11.8
Type spec location:Kiel
Main mass:Ziyao Wang
Finder:anonymous
Comments:working name WZ34; 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 Meteoritical Bulletin, no. 108, in preparation (2019)
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)
Wang Ziyao            
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1417 approved meteorites from Morocco (plus 15 unapproved names) (plus 1 impact crater)

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