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Northwest Africa 6165
Basic information Name: Northwest Africa 6165
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6165
Observed fall: No
Year found: 2003
Country: (Northwest Africa)
Mass:help 29 g
Classification
  history:
Meteoritical Bulletin:  MB 99  (2011)  Iron, IAB-sLM
Recommended:  Iron, IAB-sLM    [explanation]

This is 1 of 12 approved meteorites classified as Iron, IAB-sLM.   [show all]
Search for other: IAB complex irons, Iron meteorites, and Metal-rich meteorites
Comments: Approved 16 Sep 2010
Writeuphelp
Writeup from MB 99:

Northwest Africa 6165 (NWA 6165)

(Northwest Africa)

Purchased: Dec 2003

Classification: Iron meteorite (IAB-sLM)

History: A single small iron mass was purchased in Erfoud, Morocco, in December, 2003, by F. Kuntz.

Physical characteristics: The 29 g mass measuring 3.5 × 1 × 1 cm is covered by terrestrial iron oxidation products and lacks fusion crust.

Petrography: (M. D’Orazio, M. Gemelli, DST-PI) Etched sections display a fine Widmanstätten pattern of straight kamacite lamellae with a bandwidth of 0.25 ± 0.05 mm. Kamacite lamellae show Neumann bands and sub-boundaries. Schreibersite is common as large skeleton crystals (to 1.5 cm) enveloped in swathing kamacite. They are frequently brecciated and cemented by terrestrial oxidation products. The heat-affected rim (maximum observed thickness 250 µm) is locally very well preserved. Close to the heat-affected rim are found melted schreibersite crystals with dendritic texture and the kamacite is recrystallized into serrated α2 grains.

Geochemistry: Composition of the metal (ICP-MS; D’Orazio and Folco, 2003) is: Co = 0.492, Ni = 10.8 (both in wt%), Cu = 214, Ga = 18.0, Ge = 24.2, As = 21.2, W = 0.72, Re = 0.03, Ir = 0.40, Pt = 3.45, Au = 1.60 (all in ppm).

Classification: Iron meteorite, fine octahedrite, IAB-sLM, moderate weathering grade.

Specimens: Two etched full slices (3.03 and 2.53 g) are on deposit at DST-PI. F. Kuntz holds the main mass.

Bibliography:
  • D'Orazio M. and Folco L. (2003) Chemical analysis of iron meteorites by inductively coupled plasma-mass spectrometry. Geostand. Newslett. 27, 215-225. (link)
Data from:
  MB99
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P Dec 2003
Mass (g):29
Pieces:1
Class:Iron, IAB-sLM
Classifier:M. D'Orazio
Type spec mass (g):5.5
Type spec location:DST-PI
Main mass:F. Kuntz
Comments:Submitted by M. D'Orazio
Institutions
   and collections
DST-PI: Dipartimento di Scienze della Terra, Università di Pisa, Via S. Maria 53, 56126 Pisa, Italy (institutional address; updated 17 Oct 2011)
Kuntz: Fabien Kuntz, France; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, No. 99, April 2012, MAPS 47, E1-E52 (2012) [published online only]
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Mirko Graul Photo added 20 Oct 2022
Photo added 20 Oct 2022
Photo added 20 Oct 2022
Photo added 20 Oct 2022
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8777 approved meteorites from (Northwest Africa) (plus 1879 unapproved names)

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