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| Dayet el Aam | |||||||||||||||||||||||||||||||||
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| Basic information | Name: Dayet el Aam This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2012 Country: Mauritania Mass:  4.98 kg | ||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 148 approved meteorites classified as Iron, IIAB. [show all] Search for other: IIAB irons, Iron meteorites, and Metal-rich meteorites | ||||||||||||||||||||||||||||||||
| Comments: | Approved 19 Apr 2016 | ||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 105:
Dayet el Aam 26°44’ N, 7°58’ W Tiris Zemmour, Mauritania Find: 2012 Sept Classification: Iron meteorite (IIAB) History: One mass of 4975 g was found by nomads on Erg El Ahmar, north of Taoudenni, near the border to Algeria in September 2012. The specimen was subsequently purchased by S. Buhl and M. Jost in September 2014. Physical characteristics: The sand-polished exterior of the compact mass shows shallow regmaglypts, moderate sand-abrasion and a gray-greenish patina. Petrography: (C. Herd, UAb): Optical and SEM investigation a 3 × 4 cm polished and etched slice reveals kamacite crystals with grain boundaries demarcated by laths of schreibersite. Tabular inclusions of schreibersite were also observed. Geochemistry: Bulk composition: (C. Herd and G. Chen, UAb) Ni = 57, Co = 4.6 (both mg/g); Cu = 142, Ga = 74.1, As = 5.4, W = 2.8, Ir = 7.7, Pt = 27.2, Pd = 1.6, Ru = 18.8, Re = 0.53, Au = 0.5 (all μg/g). Obtained by solution ICP-MS using North Chile (Filomena) as an internal standard. Classification: (C. Herd, UAb): IIAB, hexahedrite. Specimens: Type specimen of 57.7 g from which ~0.8 g of material was removed for analysis, at UAb. Main mass split between S. Buhl and M. Jost. | ||||||||||||||||||||||||||||||||
| Data from: MB105 Table 0 Line 0: |
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| Institutions and collections |
UAb: 1-26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, Canada, Canada; Website (institutional address; updated 17 Oct 2011) Ouzrou: M. Ait Ouzrou, 29 Av Ouad Souss, Complexe Tamelalt, 8000 Agadir, Morocco (private address) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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Geography:
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Statistics: This is 1 of 28 approved meteorites from Tiris Zemmour, Mauritania (plus 1 impact crater) This is 1 of 221 approved meteorites from Mauritania (plus 2 unapproved names) (plus 2 impact craters) | ||||||||||||||||||||||||||||||||
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| Synonyms: |
Dayet el Aam 001 (First meteorite in DCA) | ||||||||||||||||||||||||||||||||
| Revision history: |
This lists important revisions made to data for this record.
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