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| Northwest Africa 12791 | |||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 12791 This is an OFFICIAL meteorite name. Abbreviation: NWA 12791 Observed fall: No Year found: 2019 Country: Morocco Mass:  27 g | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 569 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||||
| Comments: | Approved 23 Jan 2021 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 110:
Northwest Africa 12791 (NWA 12791) Morocco Purchased: 2019 Classification: HED achondrite (Eucrite) History: (Ziyao Wang) Purchased by Ziyao Wang from a Moroccan dealer in Yiwu/Zhejiang in Apr 2019 Physical characteristics: (Ziyao Wang) brown irregularly shaped stone of 27 g, without fusion crust Petrography: (R. Bartoschewitz, Bart) intergranular phenocrysts of pyroxene and feldspar. Pyroxene phenocrysts are of aphanitic texture (grain size ~20 µm) with few microcrysts (>30 µm), while feldspar phenocrysts present a micro trachytic texture. In our section this intergranular texture shows a transition to a turbid melt texture. Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Low Ca pyroxene Fs59.2±0.5Wo3.4±0.3, Fe/Mn=32 (n=2); pigeonite En35-45Fs49-57Wo5-10 (n=16); augite En30-33Fs27-52Wo18-42 (n=5); plagioclase An87-91Or<1 (n=11); chromite CRAL74-79, FFM4-9 (n=3); ilmenite. Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10-9 m3/kg) = 2.60. Classification: Achondrite (basaltic eucrite) Specimens: 5.47 g on deposit at Kiel, Wang Ziyao holds the main mass, and 6 g with Bart. | ||||||||||||||||||||||||||||||
| Data from: MB110 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., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Geography:
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Statistics: This is 1 of 1932 approved meteorites from Morocco (plus 27 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||