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Northwest Africa 11980 | |||||||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11980 This is an OFFICIAL meteorite name. Abbreviation: NWA 11980 Observed fall: No Year found: 2017 Country: (Northwest Africa) Mass: 1370 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 2 Dec 2018 | ||||||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 107:
Northwest Africa 11980 (NWA 11980) (Northwest Africa) Purchased: 2017 March Classification: Ordinary chondrite (L5) History: Purchased from a local dealer in Quarzazate in 2017. Physical characteristics: Two stones of 1210 and 160 g. Cut face is gray with some lighter gray chondrules, light brown inclusions, and fresh metal. Petrography: (R. Bartoschewitz, Bart) Microscopic examination of a thin section shows recrystallized and shocked matrix: mosaicism and planar fractures in olivine, undulatory extinction in plagioclase and maskelynite. Chondrules moderatly developed (0.4-1.8 mm, average 0.9 mm). Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine Fa22.1±0,6 (n=19); pyroxene Fs19.2±1.1Wo0.8±0.6 (n=9); Ca-pyroxene Fs21.4±3.2Wo9.6±2.4 (n=2). Kamacite Ni=5.9-6.7, Co=0.6 wt.% (n=5); taenite Ni=34.7-36.6, Co=0.3 wt.% (n=2). Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10-9 m3/kg) = 4.94. Classification: Ordinary chondrite (type L5, S3, W1) Specimens: 20.1 g on deposit at Kiel, main mass Dieter Janek. | ||||||||||||||||||||||||||||||||||
Data from: MB107 Table 0 Line 0: |
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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) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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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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