Meteoritical Bulletin: Entry for Northwest Africa 7123

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Northwest Africa 7123

Basic information

Name: Northwest Africa 7123
This is an OFFICIAL meteorite name.
Abbreviation: NWA 7123
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass: 981 g

Classification
history:

Meteoritical Bulletin:	MB 104	(2015)	H3
Recommended:			H3 [explanation]

This is 1 of 663 approved meteorites (plus 2 unapproved names) classified as H3. [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 10 Dec 2015

Writeup

Writeup from MB 104:

Northwest Africa 7123 (NWA 7123)

(Northwest Africa)

Purchased: 2011 Sep

Classification: Ordinary chondrite (H3)

History: Purchased by John Higgins in September 2011 from a dealer in Zagora, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed, relatively small chondrules in a finer grained matrix containing abundant altered metal.

Geochemistry: Olivine (Fa_2.4-38.4; Cr₂O₃ contents in ferroan olivine 0.04-0.11 wt.%, mean 0.07±0.03 wt.%, N = 6), orthopyroxene (Fs_3.0-36.0Wo_1.0-2.2, N = 3), subcalcic augite (Fs_7.5-18.7Wo_23.6-28.3, N = 2)

Classification: Ordinary chondrite (H3).

Specimens: 62 g including one polished thin section at UWB; the remainder is held by Mr. J. Higgins.

Data from:
  MB104
  Table 0
  Line 0:

Place of purchase:	Zagora
Date:	P 2011 Sep
Mass (g):	981
Pieces:	1
Class:	H3
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	2.4-38.4
Ferrosilite (mol%):	3.0-36.0
Wollastonite (mol%):	1.0-2.2
Magnetic suscept.:	5.25
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	62
Type spec location:	UWB
Main mass:	J. Higgins
Comments:	JH11-10; 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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)

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:
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Photos:

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

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 8559 approved meteorites from (Northwest Africa) (plus 1896 unapproved names)

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