Meteoritical Bulletin: Entry for Northwest Africa 12429

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Northwest Africa 12429

Basic information

Name: Northwest Africa 12429
This is an OFFICIAL meteorite name.
Abbreviation: NWA 12429
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass: 1400 g

Classification
history:

Meteoritical Bulletin:	MB 108	(2020)	H6
Recommended:			H6 [explanation]

This is 1 of 6825 approved meteorites (plus 6 unapproved names) classified as H6. [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 18 Jan 2019

Writeup

Writeup from MB 108:

Northwest Africa 12429 (NWA 12429)

(Northwest Africa)

Purchased: 2018 Jun

Classification: Ordinary chondrite (H6)

History: Purchased from a Moroccan mineral dealer at the mineral show in Sainte-Marie-aux-Mines, France

Petrography: (K. Metzler, IfP) Ordinary chondrite with recrystallization texture, high metal content and few visible chondrules. Secondary feldspar grains mostly >50 µm.

Geochemistry: Mineral compositions and geochemistry: The mean olivine composition is Fa_19.1±0.2(Fa_18.8-19.5; n=12). The mean low-Ca pyroxene composition is Fs_16.8±0.3Wo_1.3±0.2(Fs_16.1-17.2Wo_1.0-1.6; n=12).

Classification: H chondrite based on mineral chemistry. Petrologic type 6 based on the equilibrated state of olivine and pyroxene and grain size of secondary plagioclase.

Data from:
  MB108
  Table 0
  Line 0:

Place of purchase:	Sainte-Marie-aux-Mines, France
Date:	P 2018 Jun
Mass (g):	1400
Pieces:	1
Class:	H6
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	19.1±0.2
Ferrosilite (mol%):	16.8±0.3
Wollastonite (mol%):	1.3±0.2
Classifier:	K. Metzler, IfP
Type spec mass (g):	20
Type spec location:	IfP
Main mass:	Leonard Behner, Hamburg, Germany
Comments:	Submitted by K. Metzler (IfP)

Institutions
and collections

IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)

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 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

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