Meteoritical Bulletin: Entry for Northwest Africa 3122

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Northwest Africa 3122

Basic information

Name: Northwest Africa 3122
This is an OFFICIAL meteorite name.
Abbreviation: NWA 3122
Observed fall: No
Year found: 2003
Country: Morocco
Mass: 131 g

Classification
history:

Meteoritical Bulletin:	MB 89	(2005)	Eucrite
MetBase:	v. 7.1	(2006)	Eucrite
Recommended:			Eucrite [explanation]

This is 1 of 598 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Writeup

Writeup from MB online:

Northwest Africa 3122

Northwest Africa

Found 2003

Achondrite (polymict eucrite)

A 131 g stone was purchased in Morocco in Morocco, 2003 September. Description and classification (T. Bunch and J. Wittke, NAU): dark to medium gray, brecciated eucrite that essentially contains medium to fine-grained cumulate eucrites. Highly shocked (S4-5): maskelynite and solid state recrystallization of plagioclase; reduced birefringence and recrystallization of pyroxenes; localized melt pockets. Dominate basalt lithology: low-Ca pyroxenes, Fs_56.1-59.3Wo_1.4-1.8 (Fe/Mn = 32-34.8), exsolution lamellae (Fs_35.Wo_28.8); augite, Fs_23.5Wo_43.1. Plagioclase is unusually sodic and slightly zoned, An_68-70Or_8.2-2.0; chromite, cr# = 81 and fe# = 98.7; low Ni metal (0.32 wt. % Ni and 0.52 wt. % Co). Lightly weathered. Specimens: 21.1 g, NAU; main mass, xHupé.

Data from:
  MB89
  Table 7
  Line 463:

Origin or pseudonym:	Morocco
Place of purchase:	Erfoud
Date:	2003
Mass (g):	131
Pieces:	1
Class:	Euc
Ferrosilite (mol%):	56.4-59.3
Type spec mass (g):	21.1
Comments:	Plag An86-70Or8.2-2.0; Undefined note. NAU is Northern Arizona University, Flagstaff, AZ 86011, USA

Institutions
and collections

NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
xHupé: (old address—now see GHupé or AHupé) G. and A. Hupe, 2616 Lake Youngs Court SE, Renton, WA 98058., United States (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 89, MAPS 40, A201-A263 (2005)

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Photos:

Credit	Photos
Photos from the Encyclopedia of Meteorites:
Don Edwards
Pierre-Marie Pelé

Geography:

Morocco

Coordinates:

Unknown.

Statistics:
This is 1 of 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater)

Also see:

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Revision
history:

This lists important revisions made to data for this record.

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