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Northwest Africa 12315
Basic information Name: Northwest Africa 12315
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12315
Observed fall: No
Year found: 2018
Country: Morocco
Mass:help 166 g
Classification
  history:
Recommended:  L4    [explanation]

This is 1 of 1651 approved meteorites (plus 4 unapproved names) classified as L4.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 27 Jul 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12315 (NWA 12315)

Morocco

Purchased: 2018

Classification: Ordinary chondrite (L4)

History: (Ziyao Wang) Purchased by Ziyao Wang from Naji Ben Faraji in Laayoune, Western Sahara, Oct. 2018.

Physical characteristics: (Ziyao Wang) One 166 g stone of irregular shape, fresh black fusion crust presents well developed flow lines.

Petrography: (R. Bartoschewitz, Bart) well defined globular, elongated and highly deformed chondrules (0.3-2 mm). Matrix with irregular metal and sulfide patches and veins. Metal veins bearing individual chondrules (0.4-1 mm).

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine Fa23.6±0.6 (n=13); pyroxene Fs18.6±2.0Wo1.2±1.1 (n=7); chromite CRAL92, FFM90; ilmenite MgO=2.55, MnO=1.78 and FeO=41.9 wt.-%. Kamacite Ni=5.5, Co=0.9 wt.-% (n=4). Magnetic susceptibility r=3.56 g/cm³, log χ (× 10-9 m3/kg) = 5.21

Classification: Ordinary chondrite (L4, S4, W0)

Specimens: 20.7 g on deposit at Kiel, Ziyao Wang holds the main mass, and 19 g with Bart.

Data from:
  MB108
  Table 0
  Line 0:
Origin or pseudonym:desert
Place of purchase:Laayoune, Western Sahara
Date:P 2018
Mass (g):166
Pieces:1
Class:L4
Shock stage:S4
Weathering grade:W0
Fayalite (mol%):23.6±0.6 (n=13)
Ferrosilite (mol%):18.6±2.0 (n=7)
Wollastonite (mol%):1.2±1.1
Magnetic suscept.:5.21
Classifier:R. Bartoschewitz
Type spec mass (g):20.7
Type spec location:Kiel
Main mass:Ziyao Wang
Finder:anonymous
Comments:working name WZ50; 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. 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 1503 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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