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Northwest Africa 11976 | |||||||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11976 This is an OFFICIAL meteorite name. Abbreviation: NWA 11976 Observed fall: No Year found: 2017 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 353 approved meteorites classified as LL3. [show all] Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||||||
Comments: | Approved 2 Sep 2018 | ||||||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 107:
Northwest Africa 11976 (NWA 11976) (Northwest Africa) Purchased: Nov 2017 Classification: Ordinary chondrite (LL3) History: Purchased by Li Bofang from a Morrocan who got a language lecture in Beijing in Nov. 2017. Physical characteristics: 78.6 g stone covered by >80% dark, weak, shiny fusion crust; non-crusted surface is strong eroded and presents well-defined chondrules. Petrography: (R. Bartoschewitz, Bart, B. Li, Beijing) cut surface shows poorly recrystallized matrix with well-defined light- to dark-gray and olive-gray chondrules of 0.4-2.0 mm and very few tiny metal specks. Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine Fa21.8±10.5 (n=28); pyroxene Fs11.4±9.0Wo0.9±0.8 (n=15); Ca-pyroxene Fs26.9Wo73.1 (n=1). Kamacite: Ni=5.0-6.3, Co=1.6-1.8 wt.% (n=6); tetrataenite, troilite. Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10-9 m3/kg) = 3.95. Classification: ordinary chondrite (LL3) Specimens: 15.8 g on deposit at Kiel, B. Li holds the main mass and 4.4 g with Bart. | ||||||||||||||||||||||||||||||||||
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) Beijing: Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China (institutional address; updated 16 Oct 2011) |
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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 7547 approved meteorites from (Northwest Africa) (plus 1970 unapproved names) |