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Northwest Africa 12306
Basic information Name: Northwest Africa 12306
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12306
Observed fall: No
Year found: 2018
Country: Morocco
Mass:help 36.4 g
Classification
  history:
Meteoritical Bulletin:  MB 108  (2020)  CO3
Recommended:  CO3    [explanation]

This is 1 of 623 approved meteorites (plus 1 unapproved name) classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 21 Sep 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12306 (NWA 12306)

Morocco

Purchased: 2018

Classification: Carbonaceous chondrite (CO3)

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) Dark black stone of 36.4 g with about 30% fusion crust

Petrography: (R. Bartoschewitz, Bart) Chondrules (average ~ 200 µm), chondrule fragments, and CAIs are embedded in a fine-grained brownish matrix (about 30 vol%).

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine Fa12.8 (0.4-45.9; n=32); pyroxene Fs3.4±2.1Wo2.0±1.2 (n=6); Ca-pyroxene En86Fs5Wo9. Kamacite Ni=4.8, Co=1.1 (n=4); taenite Ni=41.3, Co=0,4 (n=4) (all wt-%). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.48

Classification: carbonaceous chondrite (CO3, S3)

Specimens: 6.7 g at Kiel and 0.6 g at Münster on deposit, Ziyao Wang holds the main mass, and 8 g with Bart. Polished thin sections Bart and IfP

Data from:
  MB108
  Table 0
  Line 0:
Origin or pseudonym:desert
Place of purchase:Chenzhou, Hunan
Date:P 2018
Mass (g):36.4
Pieces:1
Class:CO3
Shock stage:S3
Fayalite (mol%):12.8 (0.4-45.9; n=32)
Ferrosilite (mol%):3.4±2.1 (n=6)
Wollastonite (mol%):2.0±1.2
Magnetic suscept.:4.48
Classifier:R. Bartoschewitz
Type spec mass (g):6.7 + 0,6
Type spec location:Kiel + IfP
Main mass:Ziyao Wang
Finder:anonymous
Comments:working name WZ32; 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 (2020) Meteorit. Planet. Sci. 55, 1146-1150
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1967 approved meteorites from Morocco (plus 37 unapproved names) (plus 1 impact crater)

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