Meteoritical Bulletin: Entry for Northwest Africa 7128

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Northwest Africa 7128

Basic information

Name: Northwest Africa 7128
This is an OFFICIAL meteorite name.
Abbreviation: NWA 7128
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass: 260 g

Classification
history:

Meteoritical Bulletin:	MB 100	(2012)	LL4
Recommended:			LL4 [explanation]

This is 1 of 396 approved meteorites classified as LL4. [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 11 Jun 2012

Writeup

Writeup from MB 100:

Northwest Africa 7128 (NWA 7128)

(Northwest Africa)

Purchased: 2011 Sep

Classification: Ordinary chondrite (LL4)

History: Purchased by Gary Fujihara from a Moroccan dealer in 2011 September.

Petrography: Well-formed, fairly large chondrules and very low metal content. Olivine, orthopyroxene, clinopyroxene, sodic plagioclase, chromite, troilite (some grains to 4 mm), fresh kamacite, and taenite.

Geochemistry: Olivine (Fa_27.7-28.3), orthopyroxene (Fs_22.6±0.0Wo_1.5).

Classification: Ordinary chondrite (LL4).

Data from:
  MB100
  Table 1
  Line 1647:

Place of purchase:	Morocco
Date:	P 2011 Sep
Mass (g):	260
Pieces:	many
Class:	LL4
Shock stage:	S2
Weathering grade:	W0/1
Fayalite (mol%):	27.7-28.3
Ferrosilite (mol%):	22.6±0.0
Wollastonite (mol%):	1.5
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	21
Type spec location:	UWS
Main mass:	G. Fujihara
Comments:	GF11-16; 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)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)

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)
Michael S. Scherman
The Wilcox Collection of Meteorites
Public domain photographs:
Gary Fujihara

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 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.

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