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Northwest Africa 6745
Basic information Name: Northwest Africa 6745
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6745
Observed fall: No
Year found: 2008
Country: Morocco
Mass:help 135 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
Writeuphelp
Writeup from MB 105:

Northwest Africa 6745 (NWA 6745)

Morocco

Purchased: 2008 Mar

Classification: Ordinary chondrite (L3)

History: Purchased in S-Morocca in March 2008

Physical characteristics: One dark brown stone of 135 g. Saw-cut shows matrix and close packed chondrules.

Petrography: (R. Bartoschewitz, Bart) Microscopic examination of a thin section shows wide variety of clustered chondrules up to 2 mm (av. 0.6 mm) with opaque oxidized rim. Chondrule matrix ratio ~10.

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine, Fa18.7±5.5 (Fa3.7-25.4, n=29, Fe/Mn=45); pyroxene, Fs5.3±1.7Wo0.5±0.1 (Fs2.6-9.3Wo0.3-0.8, n=8); kamacite, Ni=4.5-7.2, Co=0.9-1.1 (wt.%). O-isotopes (R. Greenwood and Ian Franchi, OU): δ17O = 3.54 , δ18O = 5.26 (permil). Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10-9 m3/kg) = 4.33.

Classification: Ordinary chondrite (type L3)

Specimens: 20.0 g on deposit at Kiel, main mass anonymous, Bart 9.6 g.

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:S Morocco
Date:P 2008 Mar
Mass (g):135
Pieces:1
Class:L3
Fayalite (mol%):18.7 (3.7-25.4, n=29)
Ferrosilite (mol%):5.3 (2.6-9.3, n=8)
Wollastonite (mol%):0.5 (0.3-0.8)
Magnetic suscept.:4.33
Classifier:R. Bartoschewitz
Type spec mass (g):20
Type spec location:Kiel
Main mass:anonymous
Finder:anonymous
Comments:working name RH11-5; 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:
Find references in Google Scholar:
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 2003 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater)

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