Meteoritical Bulletin: Entry for Northwest Africa 11975

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Northwest Africa 11975

Basic information

Name: Northwest Africa 11975
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11975
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass: 95.8 g

Classification
history:

Meteoritical Bulletin:	MB 107	(2018)	LL~5
Recommended:			LL~5 [explanation]

This is 1 of 21 approved meteorites classified as LL~5. [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 9 Oct 2018

Writeup

Writeup from MB 107:

Northwest Africa 11975 (NWA 11975)

(Northwest Africa)

Purchased: Feb. 2017

Classification: Ordinary chondrite (LL~5)

History: Purchased by Li Bofang from a Morrocan dealer in Tucson in Feb 2017.

Physical characteristics: Brown globular stone of 73.7 g. Cut face shows brown matrix with chondrules and some tiny metal specks.

Petrography: (R. Bartoschewitz, Bart, B. Li, Beijing) cut surface shows recrystallized matrix with well-defined gray chondrules (0.6 - 2.0 mm) and metal specks.

Geochemistry: (R. Bartoschewitz, Bart) Magnetic susceptibility log χ (× 10^-9 m³/kg) = 4.41.

Classification: ordinary chondrite (LL~5)

Specimens: 15.8 g on deposit at Kiel, B. Li holds the main mass and 9.6 g with Bart.

Data from:
  MB107
  Table 0
  Line 0:

Place of purchase:	Tucson
Date:	P Feb. 2017
Mass (g):	95.8
Pieces:	1
Class:	LL~5
Weathering grade:	W3
Magnetic suscept.:	4.41
Classifier:	R. Bartoschewitz, B. Li
Type spec mass (g):	19.1
Type spec location:	Kiel
Main mass:	Li Bofang, Beijing
Finder:	anonymous
Comments:	NWA-LB003; 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)
Beijing: Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China (institutional address; updated 16 Oct 2011)

Catalogs:

References:

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

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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