Meteoritical Bulletin: Entry for Northwest Africa 15212

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Northwest Africa 15212

Basic information

Name: Northwest Africa 15212
This is an OFFICIAL meteorite name.
Abbreviation: NWA 15212
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass: 965 g

Classification
history:

Meteoritical Bulletin:	MB 111	(2023)	L6
Recommended:			L6 [explanation]

This is 1 of 12780 approved meteorites (plus 11 unapproved names) classified as L6. [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 19 Aug 2022

Writeup

Writeup from MB 111:

Northwest Africa 15212 (NWA 15212)

(Northwest Africa)

Purchased: 2021

Classification: Ordinary chondrite (L6)

Petrography: (K. Metzler, IfP) Equilibrated ordinary chondrite with barely visible chondrules and chondrule fragments. Secondary feldspar grains mostly >50 µm. All feldspar has been transformed to maskelynite by shock metamorpism. Moderate amounts of Fe-Ni metal, mostly oxidized by terrestrial weathering.

Geochemistry: Mineral compositions and geochemistry: The mean olivine composition is Fa_25.1±0.7(Fa_24.2-26.1; n=9) and the mean low-Ca pyroxene composition is Fs_20.8±0.5Wo_1.5±0.2(Fs_20.0-21.8Wo_1.1-1.9; n=12).

Classification: L 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:
  MB111
  Table 0
  Line 0:

Place of purchase:	Mali
Date:	P 2021
Mass (g):	965
Pieces:	5
Class:	L6
Shock stage:	C-S5
Weathering grade:	W4
Fayalite (mol%):	25.1±0.7
Ferrosilite (mol%):	20.8±0.5
Wollastonite (mol%):	1.5±0.2
Classifier:	K. Metzler, IfP
Type spec mass (g):	20
Type spec location:	IfP
Main mass:	Gregor Pacer, Bad Bellingen, 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 Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?

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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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