Meteoritical Bulletin: Entry for Northwest Africa 12894

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Northwest Africa 12894

Basic information

Name: Northwest Africa 12894
This is an OFFICIAL meteorite name.
Abbreviation: NWA 12894
Observed fall: No
Year found: 2019
Country: Morocco
Mass: 202 g

Classification
history:

Recommended:

L3 [explanation]

This is 1 of 712 approved meteorites (plus 1 unapproved name) classified as L3. [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 21 Dec 2020

Writeup

Writeup from MB 109:

Northwest Africa 12894 (NWA 12894)

Morocco

Purchased: 2019

Classification: Ordinary chondrite (L3)

History: (Ziyao Wang) Purchased by Haichuan Tang from a Moroccan dealer at the mineral show in Chenzhou in May. 2019

Physical characteristics: (Ziyao Wang) Dark yellow stone of 202 g without fusion crust, weathering is very serious

Petrography: (R. Bartoschewitz, Bart) well defined, fractured chondrules (0.3-2 mm, av. 0.7 mm) set in a brown-stained matrix; cracks and vugs are filled with Fe-hydroxides.

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine Fa_23.6±2.3(n=16); pyroxene Fs_13.5±8.6Wo_0.7±0.5(n=9). Taenite; troilite (Ni=0.2-0.8 wt%). Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10^-9 m³/kg) = 4.43

Classification: Ordinary chondrite (L3, S2, W4)

Specimens: 32.1 g at Kiel on deposit, Haichuan Tang and Ziyao Wang hold the main mass and 75 g with Bart.

Data from:
  MB109
  Table 0
  Line 0:

Origin or pseudonym:	desert
Place of purchase:	Chenzhou?China
Date:	P 2019
Mass (g):	202
Pieces:	1
Class:	L3
Shock stage:	S2
Weathering grade:	W4
Fayalite (mol%):	23.6±2.3 (n=16)
Ferrosilite (mol%):	13.5±8.6 (n=9)
Wollastonite (mol%):	0.7±0.5
Magnetic suscept.:	4.43
Classifier:	R. Bartoschewitz
Type spec mass (g):	23.1
Type spec location:	Kiel
Main mass:	Haichuan Tang and Ziyao Wang
Finder:	anonymous
Comments:	working name WZ138; 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)

Find references in NASA ADS:
Find references in Google Scholar:

Photos:

Credit	Photos
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 1548 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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