Meteoritical Bulletin: Entry for Northwest Africa 10800

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Northwest Africa 10800

Basic information

Name: Northwest Africa 10800
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10800
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass: 3.59 kg

Classification
history:

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

This is 1 of 280 approved meteorites classified as Eucrite-mmict. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 24 Sep 2016

Writeup

Writeup from MB 105:

Northwest Africa 10800 (NWA 10800)

(Northwest Africa)

Purchased: 2016 Feb

Classification: HED achondrite (Eucrite, monomict)

History: Purchased by Matthew Martin in February 2016 from a Moroccan dealer at the Tucson Gem and Mineral Show.

Petrography: (A. Irving and S. Kuehner, UWS) Rounded clasts of shocked basaltic eucrite occur in a sparse dark brown, fine grained matrix. Minerals are exsolved pigeonite (some with orange-brown cores), calcic plagioclase (polycrystalline), silica polymorph, ilmenite and Ti-chromite, with rare zircon (grains up to 5 μm), troilite and minor secondary barite.

Geochemistry: Low-Ca pyroxene host (Fs_58.9-60.5Wo_5.0-2.7, FeO/MnO = 29-32, N = 3), clinopyroxene exsolution lamellae (Fs_26.5-28.6Wo_43.5-41.7, FeO/MnO = 29-30, N = 2).

Classification: Eucrite (monomict breccia).

Specimens: 41.49 g including one polished thin section at UWB; remainder with Mr. M. Martin.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Tucson
Date:	P 2016 Feb
Mass (g):	3585
Pieces:	1
Class:	Eucrite-mmict
Shock stage:	high
Weathering grade:	moderate
Ferrosilite (mol%):	58.9-60.5; 26.5-28.6
Wollastonite (mol%):	5.0-2.7; 43.5-41.7
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	41.49
Type spec location:	UWB
Main mass:	M. Martin
Comments:	MM16-3; 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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Photos:

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

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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