Meteoritical Bulletin: Entry for Northwest Africa 14719

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Northwest Africa 14719

Basic information

Name: Northwest Africa 14719
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14719
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass: 80 g

Classification
history:

Meteoritical Bulletin:	MB 111	(2023)	Eucrite-melt breccia
Recommended:			Eucrite-melt breccia [explanation]

This is 1 of 106 approved meteorites classified as Eucrite-melt breccia. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 19 Mar 2022

Writeup

help

Writeup from MB 111:

Northwest Africa 14719 (NWA 14719)

(Northwest Africa)

Purchased: 2021

Classification: HED achondrite (Eucrite, melt breccia)

Petrography: (K. Metzler, IfP) Clast-rich melt rock with subrounded eucritic lithic clasts (up to ~1 cm) with gabbroic texture and mineral fragments (pyroxene, plagioclase, silica polymorph ) embedded in a vesicular crystallized melt. The latter shows a quench texture, consisting of skeletal pyroxene and plagioclase crystals with sizes up to 100 µm. Many lithic clasts are surrounded by a thin dark layer of a more fine-grained crystallized melt. Most pyroxene grains with thin shock-deformed exsolution lamellae. Accessories are a silica polymorph, Cr-spinel, and troilite.

Geochemistry: Mineral compositions and geochemistry: Low-Ca pyroxene Fs_49.8±0.5Wo_6.1±0.3(Fs_48.9-50.8Wo_5.5-6.4); mean Fe/Mn (at.): 34; n=11. Ca-rich pyroxene Fs_33.5±1.2Wo_28.2±1.4(Fs_31.7-35.5Wo_26.2-29.9; n=10). Plagioclase An_91.2±1.5Or_0.2±0.2(An_87.4-92.8Or_0.0-0.8); n=12.

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Mauritania
Date:	P 2021
Mass (g):	80
Pieces:	1
Class:	Eucrite-melt breccia
Shock stage:	high
Weathering grade:	low
Ferrosilite (mol%):	49.8±0.5; 33.5±1.2
Wollastonite (mol%):	6.1±0.3; 28.2±1.4
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 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)

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Revision
history:

This lists important revisions made to data for this record.

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