Meteoritical Bulletin: Entry for Northwest Africa 6744

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Northwest Africa 6744

Basic information

Name: Northwest Africa 6744
This is an OFFICIAL meteorite name.
Abbreviation: NWA 6744
Observed fall: No
Year found: 2007
Country: (Northwest Africa)
Mass: 150 g

Classification
history:

Meteoritical Bulletin:	MB 105	(2016)	L3
Recommended:			L3 [explanation]

This is 1 of 820 approved meteorites (plus 1 unapproved name) classified as L3. [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 21 May 2016

Writeup

help

Writeup from MB 105:

Northwest Africa 6744 (NWA 6744)

(Northwest Africa)

Purchased: 2007 Jan

Classification: Ordinary chondrite (L3)

History: Purchased on ebay in Jan. 2007

Physical characteristics: One brown stone of 150 g. Polished face shows closely packed chondrules.

Petrography: (R. Bartoschewitz, Bart) Microscopic examination of a thin section shows wide variety of chondrules, dominated by type II, up to 2 mm (avg. 0.6 mm) and some mineral fragments. Chondrule matrix ratio ~10.

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine Fa_20.0±6.7(Fa_0.6-28.1, n=9, Fe/Mn=44); pyroxene, Fs_13.1±5.6Wo_0.7±0.4(Fs_4.1-23.7Wo_0.2-2.1, n=11); kamacite Ni=5.9, Co=1.0 wt.%. O-isotopes (R. Greenwood and Ian Franchi, OU): δ¹⁷O = 3.43, δ¹⁸O = 5.05 (?). Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10^-9 m³/kg) = 4.24.

Classification: Ordinary chondrite (type L3)

Specimens: 21.6 g on deposit at Kiel, main mass Bart.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	ebay
Date:	P 2007 Jan
Mass (g):	150
Pieces:	1
Class:	L3
Shock stage:	S1
Weathering grade:	W2
Fayalite (mol%):	20.0 (0.6-28.1, n=9)
Ferrosilite (mol%):	13.1 (4.1-23.7, n=11)
Wollastonite (mol%):	0.7 (0.2-2.1)
Magnetic suscept.:	4.24
Classifier:	R. Bartoschewitz, Bart
Type spec mass (g):	21.6
Type spec location:	Kiel
Main mass:	Bart
Finder:	anonymous
Comments:	Submitted by R. Bartoschewitz

Plots:

O isotopes:

Institutions
and collections

Kiel: Geologisches und Mineralogisches Museum, Institut für Geowissenschaften, Christian-Albrechts-Universität Kiel, Ludewig-Mayn-Str. 10, D-24118 Kiel, Germany, Germany (institutional address; updated 13 Sep 2013)
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)
Bart: Bartoschewitz Meteorite Laboratory, Weiland 37, D-38518 Gifhorn, Germany; Website (private address; updated 30 Nov 2019)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full

Find references in NASA ADS:
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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9368 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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