Meteoritical Bulletin: Entry for Northwest Africa 15430

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Northwest Africa 15430

Basic information

Name: Northwest Africa 15430
This is an OFFICIAL meteorite name.
Abbreviation: NWA 15430
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass: 111 g

Classification
history:

Recommended:

L6 [explanation]

This is 1 of 12281 approved meteorites (plus 8 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 12 Nov 2022

Writeup

Writeup from MB 111:

Northwest Africa 15430 (NWA 15430)

(Northwest Africa)

Purchased: 2013

Classification: Ordinary chondrite (L6)

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

Physical characteristics: Individual with mostly intact fusion crust.

Petrography: (K. Metzler, IfP) Brecciated and strongly shocked ordinary chondrite of high petrologic type. A few chondrule relicts occur. Secondary feldspar grains mostly >50 μm; all feldspar has been shock-transformed to maskelynite. Moderate amounts of Fe-Ni metal, partly oxidized by terrestrial weathering. Crosscutted by shock veins, containing ringwoodite grains up to 200 uµm in size.

Geochemistry: Mineral compositions and geochemistry: The mean olivine composition is Fa_24.8±0.2(Fa_24.4-25.3; n=12) and the mean low-Ca pyroxene composition is Fs_20.7±0.4Wo_1.6±0.3(Fs_20.1-21.5Wo_1.1-2.1; n=10).

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Sainte-Marie aux Mines, France
Date:	P 2013
Mass (g):	111
Pieces:	1
Class:	L6
Shock stage:	C-S5
Weathering grade:	W2
Fayalite (mol%):	24.8±0.2
Ferrosilite (mol%):	20.7±0.4
Wollastonite (mol%):	1.6±0.3
Classifier:	K. Metzler, IfP
Type spec mass (g):	20
Type spec location:	IfP
Main mass:	Anonymous
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. 111, in preparation (2022)

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Photos:

Credit	Photos
Public domain photographs:
Knut Metzler

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)

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