Meteoritical Bulletin: Entry for Northwest Africa 14717

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Northwest Africa 14717

Basic information

Name: Northwest Africa 14717
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14717
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass: 180 g

Classification
history:

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

This is 1 of 136 approved meteorites classified as Eucrite-unbr. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 19 Mar 2022

Writeup

Writeup from MB 111:

Northwest Africa 14717 (NWA 14717)

(Northwest Africa)

Purchased: 2021

Classification: HED achondrite (Eucrite, unbrecciated)

Petrography: (K. Metzler, IfP) Unbrecciated granulitic rock, consisting of ~55 vol% pyroxene and ~45 vol% plagioclase. The mean grain size is ~0.7 mm (0.2-1.4 mm). Pyroxene shows augite exsolution lamellae (max. width ~10 µm). Accessories are troilite, Ni-bearing metal, and chromium spinel.

Geochemistry: Mineral compositions and geochemistry: Low-Ca pyroxene (host): Fs_42.0±1.4Wo_3.8±1.2(Fs_39.8-44.1Wo_2.7-5.8); mean Fe/Mn (at.): 27; n=10. Ca-rich pyroxene (exsolution lamellae) Fs_23.3±2.5Wo_33.5±3.4(Fs_19.7-26.7Wo_29.4-38.5); n=8. Plagioclase An_94.4±0.7Or_0.1±0.1(An_92.9-95.2Or_0.0-0.4); n=11. Oxygen isotopes (Tommaso di Rocco, University of Göttingen) δ¹⁸O=4.571, 4.418; δ¹⁷O= 2.146, 2.053, Δ¹⁷O=-0.265, -0.277 (all ‰).

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Mauritania
Date:	P 2021
Mass (g):	180
Pieces:	3
Class:	Eucrite-unbr
Shock stage:	M-S1
Weathering grade:	low
Ferrosilite (mol%):	42.0±1.4; 23.3±2.5
Wollastonite (mol%):	3.8±1.2; 33.5±3.4
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

Plots:

O isotopes:

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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