header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 28 Sep 2020
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Northwest Africa 12312
Basic information Name: Northwest Africa 12312
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12312
Observed fall: No
Year found: 2017
Country: Morocco
Mass:help 303 g
Classification
  history:
Recommended:  L6    [explanation]

This is 1 of 11330 approved meteorites (plus 6 unapproved names) classified as L6.   [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 12312 (NWA 12312)

Morocco

Purchased: 2017

Classification: Ordinary chondrite (L6)

History: (Ziyao Wang) Purchased by Ziyao Wang from Mr. Ayman during the China (Hunan) Mineral & Gem Show in Chenzhou City in Nov. 2017.

Physical characteristics: (Ziyao Wang) 303 g red-brown and black stone without fusion crust

Petrography: (R. Bartoschewitz, Bart) chondrule relicts and mineral fragments in a recrystallized matrix. Meteorite is mostly shock-darkened with abundant shock veins. Feldspar is transformed to maskelynite.

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine Fa25.7±0.6 (n=16); pyroxene Fs20.9±0.1Wo1.7±0.1 (n=2); feldspar An19Or7 (n=5); chromite CRAL87, FFM88 (n=2). Kamacite Ni=7.3, Co=0.8 wt-% (n=2). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.79

Classification: Ordinary chondrite (L6, S5, W1)

Specimens: 21.2 g on deposit at Kiel, Ziyao Wang holds the main mass, and 26 g with Bart. Polished thin sections Bart and IfP

Data from:
  MB108
  Table 0
  Line 0:
Origin or pseudonym:desert
Place of purchase:Beijing
Date:P 2017
Mass (g):303
Pieces:1
Class:L6
Shock stage:S5
Weathering grade:W1
Fayalite (mol%):25.7±0.6 (n=17)
Ferrosilite (mol%):20.9±0.1 (n=2)
Wollastonite (mol%):1.7±0.1
Magnetic suscept.:4.79
Classifier:R. Bartoschewitz
Type spec mass (g):21.2
Type spec location:Kiel
Main mass:Ziyao Wang
Finder:anonymous
Comments:working name WZ39; 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 1503 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

Direct link to this page