Meteoritical Bulletin: Entry for Northwest Africa 14758

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Northwest Africa 14758

Basic information

Name: Northwest Africa 14758
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14758
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass: 125.5 g

Classification
history:

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

This is 1 of 51 approved meteorites classified as Angrite. [show all]
Search for other: Achondrites, Angrites

Comments:

Approved 16 May 2022

Writeup

Writeup from MB 111:

Northwest Africa 14758 (NWA 14758)

(Northwest Africa)

Purchased: 2019 Nov

Classification: Angrite

History: Purchased by Ziyao Wang in November 2019 from a dealer in Guelmim, Morocoo.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Igneous protogranular aggregate (mean grainsize ~0.7 mm) composed of equant grains of Ca-bearing olivine, Al-rich augite, anorthite, pleonaste and kamacite (some partly altered to Fe hydroxides). The estimated area % mode from pixel counting of elemental X-ray maps is olivine 54.7, augite 27.3, anorthite 11.2, pleonaste 3.8, metal 3.0.

Geochemistry: Olivine (Fa_40.3-40.9, FeO/MnO = 82-83, CaO 1.1-1.4 wt.%, N = 4), Al-augite (Fs_10.4-10.8Wo_54.5-52.1, FeO/MnO = 71-92, Al₂O₃ 5.7-7.9 wt.%, TiO₂ 0.9-1.6 wt.%, N = 4), anorthite (An_99.5-99.7Or_0.1-0.0, N = 3).

Classification: Angrite (protogranular).

Specimens: 22.6 g including one polished thin section at UWB; remainder with WangZ.

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Guelmim
Date:	P 2019 Nov
Mass (g):	125.5
Pieces:	1
Class:	Angrite
Shock stage:	low
Weathering grade:	low
Fayalite (mol%):	40.3-40.9
Ferrosilite (mol%):	10.4-10.8
Wollastonite (mol%):	54.5-52.1
Classifier:	A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):	22.6
Type spec location:	UWB
Main mass:	WangZ
Comments:	Work name WZY-77; submitted by A. Irving

Institutions
and collections

UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
WangZ: Ziyao Wang, Hebei GEO University North Campus, Huai An dong road 127, Shijiazhuang, Hebei Province , China (private address; updated 25 Jun 2021)

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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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Ziyao Wang

Geography:

Coordinates:

Unknown.

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

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Revision
history:

This lists important revisions made to data for this record.

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