Meteoritical Bulletin: Entry for Northwest Africa 12301

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Northwest Africa 12301

Basic information

Name: Northwest Africa 12301
This is an OFFICIAL meteorite name.
Abbreviation: NWA 12301
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass: 7.5 kg

Classification
history:

Meteoritical Bulletin:	MB 107	(2018)	L5
Recommended:			L5 [explanation]

This is 1 of 8890 approved meteorites (plus 5 unapproved names) classified as L5. [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 13 Nov 2018

Writeup

help

Writeup from MB 107:

Northwest Africa 12301 (NWA 12301)

(Northwest Africa)

Purchased: 2017 Apr

Classification: Ordinary chondrite (L5)

History: Discovered by an anonymous person and purchased in Erfoud in April 2017

Physical characteristics: One brown stone with regmaglypts. Cut face shows tiny metal specks.

Petrography: (R. Bartoschewitz, Bart) Microscopic examination of a thin section shows recrystallized and shocked matrix: mosaicism and planar fractures in olivine, undolatory extinction in plagioclase. Chondrules poor developed. Magnetic susceptibility log χ (× 10^-9 m³/kg) = 4.04.

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine Fa_24.3±0,9 (n=32); pyroxene Fs_20.4±1.2Wo_1.5±0.2(n=19); Ca-pyroxene Fs_48.8Wo_43.1(n=1); feldspar An_10.1±0.3Or_5.9±1.2(n=9). Kamacite Ni=2.9-5.3, Co=1.0 wt.-% (n=2). Sulfides: troilite, pyrrhotite, and pyrite.

Classification: Ordinary chondrite (type L5)

Specimens: 20.2 g on deposit at Kiel, main mass Kuntz.

Data from:
  MB107
  Table 0
  Line 0:

Place of purchase:	Erfoud
Date:	P 2017 Apr
Mass (g):	7500
Pieces:	1
Class:	L5
Shock stage:	S3/4
Weathering grade:	W3
Fayalite (mol%):	24.3±0,9 (n=32)
Ferrosilite (mol%):	20.4±1.2 (n=19)
Wollastonite (mol%):	1.5±0.2
Magnetic suscept.:	4.04
Classifier:	R. Bartoschewitz
Type spec mass (g):	20.2
Type spec location:	Kiel
Main mass:	Fabien Kuntz
Finder:	Anonymous
Comments:	working name K369; 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)
Kuntz: Fabien Kuntz, France; Website (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462

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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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