| MetSoc Home Publications Contacts |
|
||
|
||
| Northwest Africa 12784 | |||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basic information | Name: Northwest Africa 12784 This is an OFFICIAL meteorite name. Abbreviation: NWA 12784 Observed fall: No Year found: 2018 Country: Morocco Mass:  51 g | ||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 157 approved meteorites (plus 1 unapproved name) classified as Iron, ungrouped. [show all] Search for other: Iron meteorites, Metal-rich meteorites, and Ungrouped irons | ||||||||||||||||||||||||||||
| Comments: | Approved 4 Sep 2024 | ||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 113:
Northwest Africa 12784 (NWA 12784) Morocco Purchased: 2018 Classification: Iron meteorite (ungrouped) History: (Ziyao Wang) Purchased by Dezhao Feng in 2018 at the Tucson Show and sold it to Ziyao Wang in 2019 Physical characteristics: (Ziyao Wang) Long strip, similar to a cylindrical iron block 51 g Petrography: (R. Bartoschewitz, Bart) The polished and etched section shows a duplex plessitic texture with a homogeneously oriented sheen, resembling an indistinct Widmannstätten pattern, and contains a few globular troilites (<1 mm), schreibersite laths (<300 µm), and idiomorphic chromite (<100 µm). Minor internal terrestrial alteration along fractures. Geochemistry: (J. Day, Scripps) ICP-MS data, using sample of Coahuila as standard, 95 µm spots, n=4: Ga=0.4, Ge=0.4, Mo=9, Ru=3.2, Rh=0.6, Pd=3.5, W=0.4, Re=0.2, Os=2.2, Ir=1.9, Pt=3.6, Au=0.2 (all µg/g). S-ICP-MS: Ni=10.73, Co=0.65 (wt%). Classification: Iron, ungrouped (Co and Ga vs. Au do not meet any defined iron meteorite group) Specimens: 10.5 g on deposit at Kiel, Ziyao Wang holds the main mass, and 11 g with Bart. | ||||||||||||||||||||||||||||
| Data from: MB113 Table 0 Line 0: |
|
||||||||||||||||||||||||||||
| 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) Scripps: Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093, United States (institutional address; updated 17 Apr 2009) |
||||||||||||||||||||||||||||
| Catalogs: |
| ||||||||||||||||||||||||||||
| References: | Published in Meteoritical Bulletin, no. 113, in preparation (2024)
| ||||||||||||||||||||||||||||
| Photos: |
| ||||||||||||||||||||||||||||
Geography:
|
Statistics: This is 1 of 2163 approved meteorites from Morocco (plus 32 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||
| Synonyms: |
Northwest Africa 12785 (Duplicate meteorite) NWA 12785 (Duplicate meteorite) | ||||||||||||||||||||||||||||