Meteoritical Bulletin: Entry for Northwest Africa 14347

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Northwest Africa 14347

Basic information

Name: Northwest Africa 14347
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14347
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass: 420 g

Classification
history:

Meteoritical Bulletin:	MB 110	(2022)	Diogenite-pm
Recommended:			Diogenite-pm [explanation]

This is 1 of 63 approved meteorites classified as Diogenite-pm. [show all]
Search for other: Achondrites, Diogenites, and HED achondrites

Comments:

Approved 11 Nov 2021

Writeup

help

Writeup from MB 110:

Northwest Africa 14347 (NWA 14347)

(Northwest Africa)

Purchased: 2021

Classification: HED achondrite (Diogenite, polymict)

Petrography: (K. Metzler, IfP) Polymict achondritic breccia, mainly consisting of plagioclase-bearing diogenite clasts (lithic clasts up to 1.5 cm and mineral fragments), embedded in fine-grained related debris. Some subophitic clasts with very Mg-rich pyroxene (exsolved) are admixed. Accessories are chromite, troilite, and (terrestrially oxidized) metal. Diogenite component > 90 vol%.

Geochemistry: Mineral compositions and geochemistry: Diogenitic clasts: Mean pyroxene composition: Fs_23.0±1.2Wo_2.9±0.7(Fs_21.2-24.4Wo_1.9-3.9); mean Fe/Mn (at.): 35.0; n=8. Mean plagioclase composition: An_92.6±1.5Or_0.1±0.2(An_90.8-94.4Or_0.0-0.5); n=5. Chromium spinel (atomic): Cr/(Cr+Al)=0.65-0.73; Mg/(Mg+Fe)=0.14-0.22; TiO₂=1.2-2.3 wt%; n=4. Eucrite clast: Mean low-Ca pyroxene composition: Fs_23.6±0.4Wo_1.3±0.3(Fs_23.0-24.3Wo_0.8-1.9); mean Fe/Mn (at.): 31.1; n=8. Mean composition of Ca-rich pyroxene: Fs_7.4±0.4Wo_42.3±1.0(Fs_6.6-8.0Wo_39.9-43.4); Mean plagioclase composition: An_84.0±1.4Or_0.2±0.2(An_82.7-86.1Or_0.0-0.6); n=9.

Classification: Polymict diogenite, based on mineral chemistry, occurrence of admixed eucrite clasts and high abundance (>90 vol%) of diogenitic components.

Data from:
  MB110
  Table 0
  Line 0:

Place of purchase:	Mauritania
Date:	P 2021
Mass (g):	420
Pieces:	1
Class:	Diogenite-pm
Shock stage:	U-S3
Weathering grade:	high
Ferrosilite (mol%):	23.0±1.2; 23.6±0.4; Fs7.4±0.4
Wollastonite (mol%):	2.9±0.7; 1.3±0.3; 42.3±1.0
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., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

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Revision
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