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Northwest Africa 12852 | |||||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 12852 This is an OFFICIAL meteorite name. Abbreviation: NWA 12852 Observed fall: No Year found: 2018 Country: (Northwest Africa) Mass: 504 g | ||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 848 approved meteorites (plus 2 unapproved names) classified as L3. [show all] Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||||
Comments: | Approved 9 Aug 2019 | ||||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 108:
Northwest Africa 12852 (NWA 12852) (Northwest Africa) Purchased: May 2018 Classification: Ordinary chondrite (L3) History: Collected by nomads in Western Sahara and purchased by Nicola Castellano at the Genova Mineral Show in 2018 from a Moroccan dealer. Physical characteristics: A black crust-covered single piece weighing 504 g. A cut surface displays several well formed chondrules. Petrography: (V. Moggi Cecchi, G. Pratesi, UniFi); The thin section displays a marked chondritic texture, with PO, PP and POP chondrules ranging from 200 to 800 μm in a fine grained matrix. PO and POP chondrules display inhomogenesous olivine and orthopyroxene crystals, with a slight core-rim variability. Olivine is Fe-rich in the matrix while orthopyroxene is Mg-rich. Plagioclase is Na-rich. Opaque phases are consisting of iron oxides, Fe-Ni alloys and troilite as individual grains scattared in the matrix or rimming chondrules. Geochemistry: EMP (V. Moggi Cecchi, G. Pratesi, UniFi); Olivine in chondrules and in matrix (Fa22.3±4.7Fo77.8±4.6; Fe/Mn = 58.6, n=23 ); Orthopyroxene in chondrules grains and in matrix (Fs17.8±6.3En81.3±3.3Wo0.9±0.1, Fe/Mn = 23.5, n=15); plagioclase (An6.0Or2.2); Classification: Ordinary Chondrite (L3); S3; W3 Specimens: A total of 22.8 g specimen is on deposit at Museo di Storia Naturale dell’Università di Firenze (MSN-Fi). Castellano holds the main mass. | ||||||||||||||||||||||||||||||||
Data from: MB108 Table 0 Line 0: |
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Institutions and collections |
MSN-FI: Museo di Storia Naturale “La Specola”, Sez. Mineralogia – Sistema Museale dell'Università degli Studi di Firenze
Via Giorgio La Pira, 4 – 50121 Firenze, Italy; Website (institutional address; updated 24 Oct 2022) UniFi: Università degli Studi di Firenze, P.zza S. Marco, 4 - 50121 Firenze, Italy (institutional address; updated 14 Sep 2013) |
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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 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names) | ||||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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