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Northwest Africa 6369
Basic information Name: Northwest Africa 6369
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6369
Observed fall: No
Year found: 2009
Country: Algeria
Mass:help 14.83 kg
Meteoritical Bulletin:  MB 100  (2012)  Iron, IAB complex 
Recommended:  Iron, IAB complex    [explanation]

This is 1 of 82 approved meteorites (plus 1 unapproved name) classified as Iron, IAB complex.   [show all]
Search for other: IAB complex irons, Iron meteorites, and Metal-rich meteorites
Comments: Approved 30 May 2012
Writeup from MB 100:

Northwest Africa 6369 (NWA 6369)


Found: 2008

Classification: Iron meteorite (IAB complex)

History: Complete individual found in Algeria in 2008 and purchased by anonymous collector in Saint Marie, France, in 2009.

Physical characteristics: Surface is dark brown with developed abrasion relief, polyhedral shape, 14830 g.

Petrography: (S. N. Teplyakova, Vernad) Composed of 80 vol% metal and 20 vol% silicates. Metal consists of polygonal grains of kamacite to 1.5 cm with rare taenite lamellae, spheroidized plessite, shreibersite, troilite and graphite. The silicate inclusions consist of of olivine, pyroxene, minor plagioclase, chromite, graphite, kamacite, taenite and troilite.

Geochemistry: Mineral compositions and geochemistry: (S. E. Borisovsky, IGEM, EMP) Kamacite (Ni 6.5 wt.%, Co 0.46-0.54 wt.%, P 0.03-0.06 wt.%); Olivine Fa4.9 (Fe/Mn=7-12), pyroxene Fs7.2Wo? (Fe/Mn=7-12), augite En51Wo45.1, plagioclase Ab80.7An15.7, chromite Cr/(Cr+Al) = 97.3 (MnO 2.67, V2O3 0.69, ZnO 1.66). Kamacite microelement composition (M. Humayun, FSU, LA-ICP-MS, ppm): Ga 79, Ge 342, Ru 5.75, Rh - 1.27, Pd 2.8, W 0.92, Re 0.35, Os 4.7, Ir 3.9, Pt 6.44, Au 1.23, As 10.8. Silicates oxygen isotopes composition (I. Franchi, OU, Laser fluorination): δ17O=2.35, δ18O=5.39, Δ17O=-0.45 (per mil).

Classification: Iron (IAB-xomplex, coarsest octahedrite).

Specimens: A total of 77.78 g and polished section are on deposit at Vernad. The anonymous collector holds the main mass.

Data from:
  Table 1
  Line 1365:
Place of purchase:Saint Marie, France
Mass (g):14830
Class:Iron, IAB complex
Weathering grade:minimal
Classifier:S. N. Teplyakova, Vernad
Type spec mass (g):77.78
Type spec location:Vernad
Main mass:anonymous
Comments:Submitted by C. A. Lorenz
Plots: O isotopes:  
   and collections
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)
Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016)
FSU: Department of Geological Sciences, Florida State University, Tallahassee FL 32306-4100, United States (institutional address; updated 16 Dec 2010)
IGEM: Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Russian Academy of Sciences, Staromonetny Per., 35, Moscow, 119017 , Russia (institutional address; updated 16 Dec 2010)
References: Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
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     This is 1 of 1315 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters)

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