Meteoritical Bulletin: Entry for Northwest Africa 12487

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Northwest Africa 12487

Basic information

Name: Northwest Africa 12487
This is an OFFICIAL meteorite name.
Abbreviation: NWA 12487
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass: 121.4 g

Classification
history:

Meteoritical Bulletin:	MB 108	(2020)	H~5
Recommended:			H~5 [explanation]

This is 1 of 174 approved meteorites classified as H~5. [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 11 Feb 2019

Writeup

Writeup from MB 108:

Northwest Africa 12487 (NWA 12487)

(Northwest Africa)

Purchased: 2018

Classification: Ordinary chondrite (H~5)

History: Purchased at Hamburg Mineral Show Dec. 2018.

Physical characteristics: 121.4 g brown stone with about 50% black brown, rather fresh, fusion crust of ~0.3 mm. Surface without fusion crust is very strongly sculpted by erosion and metal spots are visible.

Petrography: (R. Bartoschewitz, Bart) Gray brown, recrystallized, very porosus matrix with chondrules (0.2-1.5 mm, av. 0.5 mm), metal and sulfide specks. Vugs (av. 1 mm) bear olivine, pyroxene and troilite crystallites up to 0.3 mm.

Geochemistry: Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10^-9 m³/kg) = 5.42

Classification: Ordinary chondrite (H~5, W1)

Specimens: 20.5 g on deposit at Kiel, Bart holds the main mass.

Data from:
  MB108
  Table 0
  Line 0:

Origin or pseudonym:	desert
Place of purchase:	Hamburg
Date:	P 2018
Mass (g):	121.4
Pieces:	1
Class:	H~5
Weathering grade:	W1
Magnetic suscept.:	5.42
Classifier:	R. Bartoschewitz
Type spec mass (g):	20.5
Type spec location:	Kiel
Main mass:	Bart
Finder:	anonymous
Comments:	NWA-RB03; 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. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 7579 approved meteorites from (Northwest Africa) (plus 1969 unapproved names)

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