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Northwest Africa 14955 | |||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 14955 This is an OFFICIAL meteorite name. Abbreviation: NWA 14955 Observed fall: No Year found: 1989 Country: Morocco Mass: 1470 g | ||||||||||||||||||||||||
Classification history: |
This is 1 of 121 approved meteorites classified as Iron, IAB-MG. [show all] Search for other: IAB complex irons, Iron meteorites, and Metal-rich meteorites | ||||||||||||||||||||||||
Comments: | Approved 20 Jun 2022 | ||||||||||||||||||||||||
Writeup |
Writeup from MB 111:
Northwest Africa 14955 (NWA 14955) Morocco Purchased: 1989 Classification: Iron meteorite (IAB-MG) History: Purchased by Roberto Vargas in 2021 from R.A. Langheinrich who purchased it from a Moroccan dealer in 1989. Reportedly found in the area near Zag. Physical characteristics: The single, fist-sized mass has a black to dark brown surface. Iron oxides are present extending into the interior in some spots. Petrography: (C. Herd, UAb) Photos of a polished and etched surface reveals equant to elongate kamacite crystals with 120° grain boundaries. Kamacite bandwidth is consistent with coarsest octahedrite. Neumann lines are present in kamacite. Dark (non-metallic) inclusions on the scale of the kamacite crystals are present, as well as mm-scale metallic inclusions (likely schreibersite); inclusion mineralogy has not been determined. Alteration extends along grain boundaries into the interior. Geochemistry: ICP-MS data, using sample of North Chile (Filomena) as standard (C. Herd, P. Hill, and S. DuFrane UAb): Ni = 6.3, Co = 0.604 (both wt%); Ir = 3.2, Ga = 102, Ge = 444, As = 11, Sb = 0.3, Pt = 7.1, Cu = 134, Au = 1.2 (all μg/g). Classification: (C. Herd, UAb): IAB iron, Main Group. Although Co is higher and Au slightly lower than expected, composition is consistent with IAB-MG for all other reported elements. Specimens: Type specimen of 30.3 g at UAb. Main mass with Roberto Vargas. | ||||||||||||||||||||||||
Data from: MB111 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) |
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Catalogs: |
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References: | Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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Geography: |
Statistics: This is 1 of 2049 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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