Meteoritical Bulletin: Entry for Northwest Africa 8793

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Northwest Africa 8793

Basic information

Name: Northwest Africa 8793
This is an OFFICIAL meteorite name.
Abbreviation: NWA 8793
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass: 624 g

Classification
history:

Meteoritical Bulletin:	MB 105	(2016)	H(L)3
Recommended:			H(L)3 [explanation]

This is 1 of 3 approved meteorites classified as H(L)3. [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 26 May 2016

Writeup

Writeup from MB 105:

Northwest Africa 8793 (NWA 8793)

(Northwest Africa)

Purchased: 2011 Jun

Classification: Ordinary chondrite (H(L)3)

History: Purchased by Fabien Kuntz in June 2011 from a Moroccan dealer at the Ensisheim Show.

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed chondrules (average apparent diameter 700 μm) are set in a finer-grained matrix containing abundant altered metal.

Geochemistry: Olivine (Fa_11.3-30.6; Cr₂O₃ in ferroan examples 0.02-0.13 wt.%, mean 0.08±0.04 wt.%, N = 8), orthopyroxene (Fs_4.5-15.2Wo_0.3-1.1, N = 3), subcalcic augite (Fs_9.1Wo_29.5), augite (Fs_6.1Wo_44.7). Magnetic susceptibility log χ (× 10^-9 m³/kg) = 4.68.

Classification: Ordinary chondrite, L(H)3.

Specimens: 26.2 g plus one polished thin section at PSF; 26.05 g at MGC; main mass with Kuntz.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Ensisheim
Date:	P 2011 Jun
Mass (g):	624
Pieces:	1
Class:	H(L)3
Shock stage:	S2
Weathering grade:	W2/3
Fayalite (mol%):	11.3-30.6
Ferrosilite (mol%):	4.5-15.2
Wollastonite (mol%):	0.3-1.1
Magnetic suscept.:	4.68
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	26.2
Type spec location:	PSF
Main mass:	F. Kuntz
Comments:	K294; submitted by P. Sipiera

Institutions
and collections

PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
Kuntz: Fabien Kuntz, France; Website (private address)
MGC: Muséum Georges Cuvier, Montbéliard, France (institutional address; updated 1 Oct 2013)

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:

Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Mike Markowitz
Ryan Upchurch

Geography:

Coordinates:

Unknown.

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

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