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| Northwest Africa 11309 | |||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 11309 This is an OFFICIAL meteorite name. Abbreviation: NWA 11309 Observed fall: No Year found: 2017 Country: (Northwest Africa) Mass:  22 g | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 623 approved meteorites classified as Ureilite. [show all] Search for other: Achondrites, Ureilites | ||||||||||||||||||||||||||||||
| Comments: | Approved 19 Jun 2017 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 106:
Northwest Africa 11309 (NWA 11309) (Northwest Africa) Find: 2016 Classification: Ureilite History: Discovered by local people in 2016, purchased from M. Graul/Bernau in 2017. Physical characteristics: One black-brown fragment of 22 g, partly covered by fusion crust. Polished face shows brown patches in dark matrix; some grain boundaries show vugs. Petrography: (R. Bartoschewitz, Bart) Microprobe examination of a thin section shows olivine and minor pyroxene crystallites (grain size ~1.0 mm). Graphite abundant, diamonds and metal interstitial to silicates. Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine: Fa17.9±7.1; Cr2O3=0.6-0.8 wt.% (n=19); reduced rims present. Pyroxene: Fs4.1Wo4.9; Cr2O3=0.6 wt.% (n=1). Ca-pyroxene: Fs7En69Wo24; Cr2O3=1.2 wt.% (n=1). Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10-9 m3/kg) = 4.70. Classification: Ureilite Specimens: 4.6 g on deposit at Kiel, main mass Alan Mazur | ||||||||||||||||||||||||||||||
| Data from: MB106 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) |
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| Catalogs: |
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| References: | Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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| Photos: |
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| Geography: |
Statistics: This is 1 of 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names) | ||||||||||||||||||||||||||||||