Meteoritical Bulletin: Entry for Northwest Africa 12793

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Northwest Africa 12793

Basic information

Name: Northwest Africa 12793
This is an OFFICIAL meteorite name.
Abbreviation: NWA 12793
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass: 50 g

Classification
history:

Meteoritical Bulletin:	MB 109	(2020)	L6
Recommended:			L6 [explanation]

This is 1 of 12780 approved meteorites (plus 11 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 21 Dec 2020

Writeup

Writeup from MB 109:

Northwest Africa 12793 (NWA 12793)

(Northwest Africa)

Purchased: 2019

Classification: Ordinary chondrite (L6)

History: (Ziyao Wang) Purchased by Ziyao Wang from Fayssal Mezgouri at the mineral show in Chenzhou in May 2019

Physical characteristics: Flat brown stone of 50 g with recognizable tiny metallic spots on its surface

Petrography: (R. Bartoschewitz, Bart) Light-brown stained fractured recrystallized matrix with indistinct chondrules. Fractures are filled with hydroxides of the nearly complete oxidized metal and sulfide; beginning alteration of mafic silicates.

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine Fa_23.4±0.4(n=15); pyroxene Fs_19.5±0.3Wo_1.1±0.2(n=6); mellillite. Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10^-9 m³/kg) = 3.54

Classification: Ordinary chondrite (L6,W5)

Specimens: 12.3 g at Kiel on deposit, main mass with Bart.

Data from:
  MB109
  Table 0
  Line 0:

Place of purchase:	Chenzhou
Date:	P 2019
Mass (g):	50
Pieces:	1
Class:	L6
Weathering grade:	W5
Fayalite (mol%):	23.4±0.4 (n=15)
Ferrosilite (mol%):	19.5±0.3 (n=6)
Wollastonite (mol%):	1.1±0.2
Magnetic suscept.:	3.54
Classifier:	R. Bartoschewitz
Type spec mass (g):	12.3
Type spec location:	Kiel
Main mass:	R. Bartoschewitz
Finder:	anonymous
Comments:	working name WZD#10; 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. 109, in preparation (2020)

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

Also see:

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Revision
history:

This lists important revisions made to data for this record.

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