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Northwest Africa 12574 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 12574 This is an OFFICIAL meteorite name. Abbreviation: NWA 12574 Observed fall: No Year found: 2013 Country: (Northwest Africa) Mass: 1566 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 8890 approved meteorites (plus 5 unapproved names) classified as L5. [show all] Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||
Comments: | Approved 12 Apr 2019 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 108:
Northwest Africa 12574 (NWA 12574) (Northwest Africa) Purchased: 2013 Classification: Ordinary chondrite (L5) History: Reportedly found near Ait’ Hani in May 2012 by Mustapha Oulkouch, purchased by Dustin Dickens in September 2013 at Goulmima, Morocco, later purchased by Topher Spinnato on January 19, 2019. Physical characteristics: Single stone, dark brown, desert weathered exterior; one side shows smoothed entry orientation. Saw-cut surfaces show numerous chondrules set in a dark brown to reddish-brown groundmass. Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows mostly porphyritic chondrules set in a recrystallized groundmass; some chondrules are fragmental. Plagioclase grains are ubiquitous with sizes up to 25 μm in diameter. Pervasive Fe-oxide veinlets throughout. Geochemistry: (C. Agee UNM) Olivine Fa23.9±0.4, Fe/Mn=49±2, n=23; low-Ca pyroxene Fs20.2±0.2Wo1.2±0.2, Fe/Mn=28±1, n=11. Classification: Ordinary chondrite L5 Specimens: 23.75 g including a probe mount on deposit at UNM, Topher Spinnato holds the main mass. | ||||||||||||||||||||||||||||||
Data from: MB108 Table 0 Line 0: |
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Institutions and collections |
TM: Geoscience Museum, Transvaal Museum, P. O. Box 413, Pretoria 0001, South Africa (institutional address; updated 3 Mar 2011) UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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Geography: |
Statistics: This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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