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Northwest Africa 13779 | |||||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13779 This is an OFFICIAL meteorite name. Abbreviation: NWA 13779 Observed fall: No Year found: 2020 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 271 approved meteorites classified as Lunar (feldsp. breccia). [show all] Search for other: Lunar meteorites | ||||||||||||||||||||||||||||||||
Comments: | Approved 8 Apr 2021 | ||||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 110:
Northwest Africa 13779 (NWA 13779) (Northwest Africa) Purchased: 2020 Classification: Lunar meteorite (feldspathic breccia) History: The meteorite was purchased from a group of meteorites hunters in Nouadhibou, Mauritania in late 2020. Physical characteristics: Dark grayish rock without fusion crust. Petrography: Polymict feldspathic breccia composed of lithic clasts (gabbroic, fine-grained subophitic basalts, impact melt up to 5 mm in size) and mineral fragments set in a more fine-grained clastic and partly shock melted matrix. Main minerals are zoned low-Ca pyroxene, augite, olivine, and plagioclase. Minor phases include silica, ferroan olivine, chromite, ilmenite, and FeS. Some cracks are filled with secondary calcite. Geochemistry: low-Ca pyroxene: Fs20.2±7.0Wo3.3±0.3 (Fs12.7-27.9Wo2.6-3.8, FeO/MnO=51±4, n=10); augite: Fs27.4±11.1Wo37.2±5.9 (Fs216.7-45.1Wo27.8-43.1, FeO/MnO=46±7, n=17); olivine: Fa38.3±2.6, (Fa35.2-40.7, FeO/MnO=88±7, n=9); ferroan olivine: Fa87.8±2.0, (Fa85.6-90.0, FeO/MnO=73±4, n=8); plagioclase: An95.1±4.9 (An85.0-97.7, n=10) | ||||||||||||||||||||||||||||||||
Data from: MB110 Table 0 Line 0: |
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Institutions and collections |
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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Geography: |
Statistics: This is 1 of 8390 approved meteorites from (Northwest Africa) (plus 1899 unapproved names) |