Meteoritical Bulletin: Entry for Northwest Africa 4541

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Northwest Africa 4541

Basic information

Name: Northwest Africa 4541
This is an OFFICIAL meteorite name.
Abbreviation: NWA 4541
Observed fall: No
Year found: 2006
Country: Algeria
Mass: 168 g

Classification
history:

Meteoritical Bulletin:	MB 93	(2008)	Eucrite-mmict
Recommended:			Eucrite-mmict [explanation]

This is 1 of 281 approved meteorites classified as Eucrite-mmict. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 1 Jan 2008
Revised 4 Aug 2008: final writeup

Writeup

Writeup from MB 93:

Northwest Africa 4541

Algeria

Find: 2006

Achondrite (eucrite, basaltic, monomict breccia)

History and Physical characteristics: Found in Algeria and purchased from a dealer in Erfoud, Morocco, by S. Turecki in 2006. The single 168 g stone has a fresh black fusion crust.

Petrography: (J. Wittke and T. Bunch, NAU) Fine-grained (<0.35 mm), subophitic basalt breccia, dominated by subrounded clasts that are set in a cataclastic matrix.

Mineral compositions and Geochemistry: Pigeonite (Fe_54.7-59.4Wo_4.4-7.3; FeO/MnO = 31-34 g/g), augite (Fs₃₈Wo_46.5), plagioclase (An_94.3), chromite (Cr/(Cr + Al) = 0.85), with minor ilmenite and silica.

Classification: Achondrite (eucritic, basaltic, monomict breccia), minimal to moderate shock, minimal weathering.

Type specimens: A 20 g sample is on deposit at NAU. Turecki is the main mass holder.

Submitted by: T. Bunch, NAU.

Data from:
  MB93
  Table 2
  Line 60:

Place of purchase:	Erfoud, Morocco
Date:	2006
Mass (g):	168
Pieces:	1
Class:	Euc
Type spec mass (g):	20

Institutions
and collections

NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
Turecki: Stan Turecki, 5618 Regis Ave., Port Richey, Florida, United States (private address; updated 28 Dec 2010)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 93, MAPS 43, 571-632 (2008)

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Geography:

Algeria

Coordinates:

Unknown.

Statistics:
This is 1 of 1358 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters)

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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