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Northwest Africa 11709 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11709 This is an OFFICIAL meteorite name. Abbreviation: NWA 11709 Observed fall: No Year found: 2016 Country: Morocco Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 569 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 27 Mar 2018 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 107:
Northwest Africa 11709 (NWA 11709) Morocco Purchased: June 2016 Classification: HED achondrite (Eucrite) History: A fragmented stone consisting of many pieces totally weighing 180 g was found by an anonymous person in Western Sahara and purchased 2016 by Enzo Compagnucci. Physical characteristics: Few fragments are partly covered by fusion crust. Petrography: (V. Moggi Cecchi, G. Pratesi, S. Caporali, UniFi): The thin section reveals a brecciated texture consisting of lithic clasts in a fine grained matrix. Lithic clasts consists of exsolved orthopyroxene crystals with fine pigeonite exsolution lamellae, 4-8 μm in width, augite, calcic plagioclase, ilmenite, chromite, troilite and FeNi metal. Geochemistry: (V. Moggi Cecchi, G. Pratesi, S. Caporali, UniFi) Eucritic clasts: orthopyroxene host (Fs36.6±1.1En60.2±1.3Wo3.3±0.2, FeO/MnO = 29.5?0.3, n=6); augite (Fs22.6±1.1En33.0±1.2Wo44.4±1.4; n=6; Fe/Mn=28.3±0.3); pigeonite exsolution lamellae in orthopyroxene (Fs52.6±1.2,En44.4±1.1Wo3.0±0.3; n=5; Fe/Mn = 31.2±0.3); Plagioclase An 91.7±1.3Or0.3±0.1, n=4; Classification: Eucrite with medium degree of shock and medium degree of weathering. Specimens: A total of 20.2 g specimen and one thin section is on deposit at MSN-Fi. Cavaglià owns the main mass, now weighing 160 g. | ||||||||||||||||||||||||||||
Data from: MB107 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. 107, MAPS 55, 460-462
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Geography:![]() |
Statistics: This is 1 of 1929 approved meteorites from Morocco (plus 27 unapproved names) (plus 1 impact crater) |