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Northwest Africa 3320
Basic information Name: Northwest Africa 3320
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 3320
Observed fall: No
Year found: 2006
Country: (Northwest Africa)
Mass:help 1800 g
Meteoritical Bulletin:  MB 105  (2016)  LL6-melt breccia
Recommended:  LL6-melt breccia    [explanation]

This is 1 of 22 approved meteorites classified as LL6-melt breccia.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 15 Jun 2016
Writeup from MB 105:

Northwest Africa 3320 (NWA 3320)

(Northwest Africa)

Find: 2006

Classification: Ordinary chondrite (LL6, melt breccia)

History: The stone was discovered in 2006 and was purchased from a Moroccan dealer at a German mineral fair in the same year.

Physical characteristics: One yellow-brown stone of 1800 g. Saw cut shows lighter interior with few small vugs.

Petrography: (R. Bartoschewitz, Bart) Microscopic examination of a thin section shows two distinct lithologies. One of micro-crystalline matrix with olivine grains up to 0.8 mm (avg. 0.1 mm), and small metallic globes (0.02 mm) and oxidized veins. The other of recrystallized matrix with mineral fragments and poorly developed chondrules (PO, BO, RP) up to 1 mm.

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine, Fa25.7±0.8 (n=14); Ca-rich pyroxene, En44.9-46.4Fs7.7-8.5Wo46.4-44.0 (n=2); feldspar, An9.7Or5.3. O-isotopes (R. Greenwood and I. Franchi, OU): δ17O = 3.94, δ18O = 5.35 (permit). Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10-9 m3/kg) = 3.13.

Classification: Ordinary chondrite (LL melt breccia)

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

Data from:
  Table 0
  Line 0:
Place of purchase:Germany
Mass (g):1800
Class:LL6-melt breccia
Fayalite (mol%):27.5±0.8 (n=14)
Magnetic suscept.:3.13
Classifier:R. Bartoschewitz
Type spec mass (g):20
Type spec location:Kiel
Main mass:Haiderer
Comments:Submitted by R. Bartoschewitz
Plots: O isotopes:  
   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)
Haiderer: Erich Haiderer Laboratory, P.O. Box 88, A-1140 Vienna, Austria (private address; updated 7 Jan 2015)
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

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