Meteoritical Bulletin: Entry for Northwest Africa 4362

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Northwest Africa 4362

Basic information

Name: Northwest Africa 4362
This is an OFFICIAL meteorite name.
Abbreviation: NWA 4362
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass: 60.1 g

Classification
history:

Meteoritical Bulletin:	MB 92	(2007)	CK5/6
Recommended:			CK5/6 [explanation]

This is 1 of 6 approved meteorites classified as CK5/6. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites

Comments:

Approved 24 Jul 2007

Writeup

help

Writeup from MB 92:

Northwest Africa 4362

Morocco

Find: 2005

Carbonaceous chondrite (CK5/6)

History:An anonymous finder collected the meteorite in the western part of the Sahara. The main mass holder purchased the sample in 2005 in Erfoud, Morocco.

Physical characteristics: One oriented stone of 60.1 g covered with fresh fusion crust was recovered.

Petrography: (A. Greshake, MNB). The meteorite shows a fine-grained texture with recrystallized matrix dominating over rare and mostly poorly defined chondrules and mineral fragments. Feldspar is abundant in the matrix and minor phases include Cr-rich magnetite and Ca-pyroxene.

Mineral compositions and geochemistry:Olivine (Fa_29.9), low-Ca pyroxene (Fs_25.5). Oxygen Isotopes (I. A. Franchi and R. C. Greenwood, OU): δ¹⁷O = -4.72, δ¹⁸O = -0.63, Δ¹⁷O = -4.39 (all ‰).

Classification: Carbonaceous chondrite (CK5/6); minimal shock, moderate to extensive weathering.

Type specimens: A total of 14.4 g plus one polished thin section are on deposit at MNB. HSSH holds the main mass.

Data from:
  MB92
  Table 2
  Line 48:

Place of purchase:	Erfoud, Morocco
Date:	2005
Mass (g):	60.1
Pieces:	1
Class:	CK5/6
Type spec mass (g):	14.4

Plots:

O isotopes:

Institutions
and collections

MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
OU: Planetary and Space Sciences Department of Physical Sciences The Open University Walton Hall Milton Keynes MK7 6AA United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011)
HSSH: Hanno Strufe, Langenbergstr. 32, 66954 Pirmasens, Germany; Website (private address)

Catalogs:

References:

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

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 7859 approved meteorites from (Northwest Africa) (plus 1961 unapproved names)

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