Meteoritical Bulletin: Entry for Northwest Africa 8263

header

MetSoc Home Publications Contacts

Search the Meteoritical Bulletin Database
Last update: 5 Sep 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 8263

Basic information

Name: Northwest Africa 8263
This is an OFFICIAL meteorite name.
Abbreviation: NWA 8263
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass: 226 g

Classification
history:

Meteoritical Bulletin:	MB 104	(2015)	L3
Recommended:			L3 [explanation]

This is 1 of 861 approved meteorites (plus 2 unapproved names) classified as L3. [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 28 Oct 2015

Writeup

help

Writeup from MB 104:

Northwest Africa 8263 (NWA 8263)

(Northwest Africa)

Purchased: 2014 Jan

Classification: Ordinary chondrite (L3)

History: Purchased by Fabien Kuntz in January 2014 from a dealer in Ouarzazate, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Relatively closely-packed, medium-sized (0.6-3 mm, mean 1.7±0.9mm), well-formed chondrules in a fine matrix. Minerals are olivine, orthopyroxene, pigeonite, subcalcic augite, augite, sodic plagioclase, chromite, troilite and altered kamacite.

Geochemistry: Olivine (Fa_5.6-38.6, N = 8; Cr₂O₃ in ferroan olivine = 0.05-0.11 wt.%, mean 0.07±0.03 wt.%, N = 6), orthopyroxene (Fs_3.3-30.0Wo_0.2-2.1, N = 3), pigeonite (Fs_5.4Wo_7.8), subcalcic augite (Fs_23.7Wo_26.0), augite (Fs_5.9Wo_47.8).

Classification: Ordinary chondrite L3. Estimation of subtype L3.5 based on histograms of Cr₂O₃ distribution in ferroan olivine given in Fig. 4 of Grossman and Brearley (2005).

Specimens: 25.4 g including one polished thin section at UWB. The remainder is held by Kuntz.

Bibliography:

Grossman J.N. and Brearley A.J. (2005) The onset of metamorphism in ordinary and carbonaceous chondrites. Meteorit. Planet. Sci. 40, 87-122. (link)

Data from:
  MB104
  Table 0
  Line 0:

Place of purchase:	Ouarzazate
Date:	P 2014 Jan
Mass (g):	226
Pieces:	1
Class:	L3
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	5.6-38.6
Ferrosilite (mol%):	3.3-30.0
Wollastonite (mol%):	0.2-2.1
Magnetic suscept.:	4.75
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	25.4
Type spec location:	UWB
Main mass:	F. Kuntz
Comments:	K204; 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)
Kuntz: Fabien Kuntz, France; 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

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

Photos:

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

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9914 approved meteorites from (Northwest Africa) (plus 1841 unapproved names)

Direct link to this page