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Northwest Africa 12309 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 12309 This is an OFFICIAL meteorite name. Abbreviation: NWA 12309 Observed fall: No Year found: 2015 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 189 approved meteorites classified as Mesosiderite. [show all] Search for other: Mesosiderites, Metal-rich meteorites | ||||||||||||||||||||||||||||||
Comments: | Approved 21 Sep 2019 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 108:
Northwest Africa 12309 (NWA 12309) (Northwest Africa) Purchased: 2015 Classification: Mesosiderite History: (Ziyao Wang) Purchased by Ziyao Wang from Sbai Mohamed at the mineral show in Beijing in Nov. 2015 Physical characteristics: (Ziyao Wang) A 17.8 g dark yellowish stone Petrography: (R. Bartoschewitz, Bart) composed mainly of orthopyroxene beside some pigeonite and feldspar. Metal is completly altered and Fe-hydroxides fill cracks. Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Pyroxene Fs22.2±5.7Wo2.0±1.3 (n=10); pigeonite En58Fs34Wo8 (n=2); feldspar An92Or<1 (n=1). Altered metal: Fe~50, Ni~3 (all wt-%). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.66 Classification: Mesosiderite Specimens: 3.97 g on deposit at Kiel, Ziyao Wang holds the main mass, and 1.3 g with Bart. | ||||||||||||||||||||||||||||||
Data from: MB108 Table 0 Line 0: |
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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) Bart: Bartoschewitz Meteorite Laboratory, Weiland 37, D-38518 Gifhorn, Germany; Website (private address; updated 30 Nov 2019) Beijing: Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China (institutional address; updated 16 Oct 2011) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 108, in preparation (2019)
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Geography: |
Statistics: This is 1 of 7035 approved meteorites from (Northwest Africa) (plus 2000 unapproved names) |