Meteoritical Bulletin: Entry for Northwest Africa 10548

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Northwest Africa 10548

Basic information

Name: Northwest Africa 10548
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10548
Observed fall: No
Year found: 2009
Country: (Northwest Africa)
Mass: 437 g

Classification
history:

Meteoritical Bulletin:	MB 105	(2016)	Eucrite-unbr
Recommended:			Eucrite-unbr [explanation]

This is 1 of 138 approved meteorites classified as Eucrite-unbr. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 27 Feb 2016

Writeup

Writeup from MB 105:

Northwest Africa 10548 (NWA 10548)

(Northwest Africa)

Purchased: 2009

Classification: HED achondrite (Eucrite, unbrecciated)

History: Purchased by Philip Mani in 2009 from a dealer in Zagora, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Very fresh specimen with intersertal gabbroic texture (mean grainsize ~1mm). Composed mainly of exsolved pigeonite and calcic plagioclase (bytownite) with accessory silica polymorph, ilmenite, Ti-rich chromite, Ti-Al chromite and troilite.

Geochemistry: Low-Ca pyroxene host (Fs_56.6-57.5Wo_7.2-6.7, FeO/MnO = 30-31, N = 3), high-Ca pyroxene exsolution lamellae (Fs_29.7-29.8Wo_39.5-40.0, FeO/MnO = 31-32, N = 3), plagioclase (An_89.5-89.8Or_0.3-0.4, N = 2).

Classification: Eucrite (unbrecciated, microgabbroic).

Specimens: 20.28 g including one polished thin section at UWB; main mass with Mr. P. Mani.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Zagora
Date:	P 2009
Mass (g):	437
Pieces:	1
Class:	Eucrite-unbr
Shock stage:	low
Weathering grade:	low
Ferrosilite (mol%):	56.6-57.5; 29.7-29.8
Wollastonite (mol%):	7.2-6.7; 39.5-40.0
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	20.28
Type spec location:	UWB
Main mass:	P. Mani
Comments:	PCM15-11-13; 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)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)

Also see:

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Revision
history:

This lists important revisions made to data for this record.

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