|
Northwest Africa 12420 | |||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Basic information | Name: Northwest Africa 12420 This is an OFFICIAL meteorite name. Abbreviation: NWA 12420 Observed fall: No Year found: 2011 Country: (Northwest Africa) Mass: 3.02 kg | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 273 approved meteorites classified as Mesosiderite. [show all] Search for other: Mesosiderites, Metal-rich meteorites | ||||||||||||||||||||||||||||
Comments: | Approved 27 Jul 2019 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 108:
Northwest Africa 12420 (NWA 12420) (Northwest Africa) Purchased: 2011 Feb Classification: Mesosiderite History: Puchased in Temara, Morocco, by Adam Aaronson in February 2011. Petrography: (A. Irving and S. Kuehner, UWS) Aggregate of predominantly low-Ca pyroxene (orthopyroxene cores with slightly more calcic and more ferroan rims), calcic plagioclase and metal (about 50 vol%, kamacite with taenite) plus accessory chromite, Mg-merrillite, silica polymorph and troilite. Geochemistry: Orthopyroxene (Fs21.6-23.8Wo0.9-1.5, FeO/MnO = 31-33, N = 2), low-Ca pyroxene rim (Fs31.7Wo4.2, FeO/MnO = 26), plagioclase (An86.4-89.5Or0.7-0.5, N = 2). Classification: Mesosiderite. Specimens: 20.4 g including one polished endcut at UWB; remainder with Aaronson. | ||||||||||||||||||||||||||||
Data from: MB108 Table 0 Line 0: |
|
||||||||||||||||||||||||||||
Institutions and collections |
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023) Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010) |
||||||||||||||||||||||||||||
Catalogs: |
| ||||||||||||||||||||||||||||
References: | Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
| ||||||||||||||||||||||||||||
Geography: |
Statistics: This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names) | ||||||||||||||||||||||||||||
Also see: |
This lists the most popular meteorites among people who looked up this meteorite.
| ||||||||||||||||||||||||||||
Revision history: |
This lists important revisions made to data for this record.
|