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Northwest Africa 10641 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 10641 This is an OFFICIAL meteorite name. Abbreviation: NWA 10641 Observed fall: No Year found: 2015 Country: Morocco Mass: 110.3 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 603 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 24 May 2016 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 105:
Northwest Africa 10641 (NWA 10641) Morocco Purchased: 2015 Sept Classification: HED achondrite (Eucrite) History: A single stone of 110.3 g was found by an anonymous finder in Western Sahara and purchased 2015 in Erfoud by Hichame Mimaghador. Physical characteristics: The main mass is partially covered by a black fusion crust. Petrography: (V. Moggi Cecchi, G. Pratesi, S. Caporali, UniFi): The thin section analyzed displays a basaltic texture. The major phase is orthopyroxene, with crystals 80-130 μm in width, minor clinopyroxene and anorthitic plagioclase. Exsolved low-Ca pyroxene crystals displaying fine, 4-6 μm pigeonite exsolution lamellae, are visible. Minor phases are ilmenite, troilite, chromite, and FeNi metal Geochemistry: (V. Moggi Cecchi, G. Pratesi, S. Caporali, UniFi) Calcic plagioclase An 90.0±1.2Or0.5±0.1, n=7; low-Ca pyroxene (Fs61.9±1.1En36.1±1.2Wo2.0±0.2; n=6; Fe/Mn=34.4±0.2); augite (Fs27.1±1.1En29.5±1.3Wo43.4±0.2; n=7; Fe/Mn=35.6±0.1); exsolved low-Ca pyroxene (Fs62.8±1.2En35.4±1.1Wo1.8±0.1; n=7; Fe/Mn=34.4±0.2); pigeonite exsolution lamellae in orthopyroxene (Fs55.3±1.3,En34.4±1.2Wo10.3±0.3; n=7; Fe/Mn = 33.2±0.1). Classification: Basaltic eucrite with moderate degree of shock and medium degree of weathering. Specimens: A total of 21.2 g specimen and one thin section is on deposit at MSN-FI. Mimaghador owns the main mass. | ||||||||||||||||||||||||||||||
Data from: MB105 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. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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Geography: |
Statistics: This is 1 of 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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