Meteoritical Bulletin: Entry for Northwest Africa 10840

MetSoc Home Publications Contacts

Search the Meteoritical Bulletin Database
Last update: 15 Apr 2024
Search for:	Search type:	Search limits:	Display:	Publication:
Names Text Places Classes Years	Contains Starts with Exact Sounds like	NonAntarctic Falls Non-NWAs Has strewnfield		What's new in the last:
Include past classifications in search		Has photo	Limit to approved meteorite names
Search text:

Northwest Africa 10840

Basic information

Name: Northwest Africa 10840
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10840
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass: 210 kg

Classification
history:

Meteoritical Bulletin:	MB 105	(2016)	L4
Recommended:			L4 [explanation]

This is 1 of 2062 approved meteorites (plus 5 unapproved names) classified as L4. [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 24 Sep 2016

Writeup

Writeup from MB 105:

Northwest Africa 10840 (NWA 10840)

(Northwest Africa)

Purchased: 2016 Feb

Classification: Ordinary chondrite (L4)

History: Found in Morocco and purchased in Laayoune, Morocco by Aziz Habibi in February 2016.

Physical characteristics: A single very large (210 kg), dark stone lacking fusion crust.

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed chondrules occur within a relatively coarse-grained matrix containing altered metal. Silicate phases exhibit undulose extinction and are darkened by the presence of very fine grained included metal blebs.

Geochemistry: Olivine (Fa_23.4-23.5, N = 3), orthopyroxene (Fs_19.8-20.2Wo_1.8-1.4, N = 3), clinopyroxene (Fs_7.6-7.8Wo_45.7-44.1, N = 2).

Classification: Ordinary chondrite (L4).

Specimens: 94 g including one polished thin section at UWB; remainder with Mr. A. Habibi.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Laayoune
Date:	P 2016 Feb
Mass (g):	210000
Pieces:	1
Class:	L4
Shock stage:	S4
Weathering grade:	W2/3
Fayalite (mol%):	23.4-23.5
Ferrosilite (mol%):	19.8-20.2
Wollastonite (mol%):	1.8-1.4
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	94
Type spec location:	UWB
Main mass:	A. Habibi
Comments:	AH211; 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

Find references in NASA ADS:
Find references in Google Scholar:

Geography:

Coordinates:

Unknown.

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

Direct link to this page