Meteoritical Bulletin: Entry for Northwest Africa 8748

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Northwest Africa 8748

Basic information

Name: Northwest Africa 8748
This is an OFFICIAL meteorite name.
Abbreviation: NWA 8748
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass: 32.4 g

Classification
history:

Meteoritical Bulletin:	MB 104	(2015)	Howardite
Recommended:			Howardite [explanation]

This is 1 of 451 approved meteorites classified as Howardite. [show all]
Search for other: Achondrites, HED achondrites, and Howardites

Comments:

Approved 10 Feb 2015

Writeup

Writeup from MB 104:

Northwest Africa 8748 (NWA 8748)

(Northwest Africa)

Purchased: 2014 Jul

Classification: HED achondrite (Howardite)

History: Purchased by Darryl Pitt in July 2014 from a dealer in Mauritania.

Petrography: (A. Irving and S. Kuehner, UWS) Fresh fragmental breccia composed predominantly of eucritic crystalline debris (calcic plagioclase, exsolved pigeonite, silica polymorph, ilmenite, troilite, Ni-free metal), some basaltic eucrite clasts and ~15 vol.% diogenitic orthopyroxene grains (containing inclusions of chromite and troilite).

Geochemistry: Diogenitic orthopyroxene (Fs_24.6-26.5Wo_1.8-3.1, FeO/MnO = 28-33, N = 3), orthopyroxene host (Fs_62.9-64.3Wo_1.8-1.9, FeO/MnO = 33-35, N = 3), clinopyroxene exsolution lamellae (Fs_27.1-28.4Wo_43.2-43.3, FeO/MnO = 28-31, N = 3).

Classification: Howardite.

Specimens: 6.6 g including one polished thin section at UWB; the remainder is held by DPitt.

Data from:
  MB104
  Table 0
  Line 0:

Place of purchase:	Mauritania
Date:	P 2014 Jul
Mass (g):	32.4
Pieces:	1
Class:	Howardite
Shock stage:	low
Weathering grade:	low
Ferrosilite (mol%):	24.6-26.5; 62.9-64.3; 27.1-28.4
Wollastonite (mol%):	1.8-3.1; 1.8-1.9; 43.2-43.3
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	6.6
Type spec location:	UWB
Main mass:	D. Pitt
Comments:	MAC 60; 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)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/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:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

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