Meteoritical Bulletin: Entry for Northwest Africa 4398

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Northwest Africa 4398

Basic information

Name: Northwest Africa 4398
This is an OFFICIAL meteorite name.
Abbreviation: NWA 4398
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass: 228 g

Classification
history:

Meteoritical Bulletin:	MB 92	(2007)	Eucrite-mmict
Recommended:			Eucrite-mmict [explanation]

This is 1 of 272 approved meteorites classified as Eucrite-mmict. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 24 Jul 2007

Writeup

Writeup from MB 92:

Northwest Africa 4398

Morocco

Find: 2005

Achondrite (eucrite, monomict)

History:The meteorite was recovered by an anonymous finder in northwest Africa and purchased by the main mass holder in Midelt, Morocco.

Physical characteristics:A single stone of 228 g was recovered.

Petrography: (A. Greshake, MNB). The meteorite displays a largely unbrecciated basaltic texture with calcic plagioclase and exsolved low-Ca pyroxene being the major phases. Minor phases include silica, ilmenite, and Al,Ti-rich chromite.

Mineral compositions: Plagioclase (An_78.2-87.2) and pyroxene (Fs_31.2-61.1Wo_4.6-40.5).

Classification:Achondrite (eucrite, monomict); moderate shock, minimal weathering.

Type specimens: A total of 20.3 g of sample plus one polished thin section are on deposit at MNB. Ralew holds the main mass.

Data from:
  MB92
  Table 2
  Line 68:

Place of purchase:	Tagounite, Morocco
Date:	2005
Mass (g):	228
Pieces:	1
Class:	Euc
Type spec mass (g):	20.3

Institutions
and collections

MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 92, MAPS 42, 1647-1694 (2007)

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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
bphd

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)

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