Meteoritical Bulletin: Entry for Northwest Africa 4628

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Northwest Africa 4628

Basic information

Name: Northwest Africa 4628
This is an OFFICIAL meteorite name.
Abbreviation: NWA 4628
Observed fall: No
Year found: 2006
Country: (Northwest Africa)
Mass: 45.7 g

Classification
history:

Meteoritical Bulletin:	MB 100	(2012)	CO3
Recommended:			CO3 [explanation]

This is 1 of 645 approved meteorites (plus 1 unapproved name) classified as CO3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites

Comments:

Approved 15 May 2012

Writeup

Writeup from MB 100:

Northwest Africa 4628 (NWA 4628)

(Northwest Africa)

Purchased: 2006

Classification: Carbonaceous chondrite (CO3)

History: The meteorite was found by an anonymous finder in northwest Africa and bought by the main mass holder at a mineral fair in Munich, Germany.

Physical characteristics: One dark brown fragment without fusion crust weighing 45.7 g.

Petrography: The meteorite exhibits characteristic texture of abundant small chondrules, CAIs, and mineral fragments set in a fine-grained dark brownish matrix.

Geochemistry: Olivine, Fa_0.3-50.4; pyroxene, Fs_0.9-4.5.

Classification: Carbonaceous chondrite (CO3); S2, W2.

Specimens: 9.5 g plus one polished thin section are on deposit at MNB.

Data from:
  MB100
  Table 1
  Line 1188:

Place of purchase:	Munchen
Date:	P 2006
Mass (g):	45.7
Pieces:	1
Class:	CO3
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	0.3-50.4
Ferrosilite (mol%):	0.9-4.5
Classifier:	A. Greshake, MNB
Type spec mass (g):	9.5
Type spec location:	MNB
Main mass:	Marc Jost
Comments:	Submitted by Ansgar Greshake

Institutions
and collections

MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)

Catalogs:

References:

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

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Photos:

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

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 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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