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Northwest Africa 14862 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 14862 This is an OFFICIAL meteorite name. Abbreviation: NWA 14862 Observed fall: No Year found: 2022 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 34 approved meteorites classified as R3-6. [show all] Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3) | ||||||||||||||||||||||||||||||
Comments: | Approved 9 May 2022 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 111:
Northwest Africa 14862 (NWA 14862) (Northwest Africa) Purchased: March, 2022 Classification: Rumuruti chondrite (R3-6) History: The meteorite was purchased from a meteorite dealer in Morocco. Physical characteristics: Brownish rock without fusion crust. Petrography: The meteorite displays a light brownish to orange interior and is composed of up to 2 cm sized mostly angular type 6 and black impact melt clasts in type 3 matrix. Fe-rich olivine, Ca-pyroxene, and sodic plagioclase are the most dominant mineral phase in the type 6 clasts. In the matrix, olivine and low-Ca pyroxene are compositionally unequilibrated and chondrules have an average diameter of about 400 μm. Sodic plagioclase occurs as small isolated grains. Opaques phases are sulfides and Ti-bearing chromite; no metal detected. Geochemistry: type 3 lithology: olivine: Fa25.4±13.7 (Fa3.0-41.3, n=19); low-Ca pyroxene: Fs16.7±10.3Wo0.9±0.7 (Fs1.4-34.7Wo0.2-3.1, n=15); type 6 lithology: olivine: Fa37.5±0.2 (FeO/MnO=80±5, n=10); Ca-pyroxene: Fs14.6±0.9Wo39.8±1.4, n=10; feldspar: An9.0-14.7Ab81.4-85.8Or3.9-5.8 | ||||||||||||||||||||||||||||||
Data from: MB111 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) Polandmet: targoniny 30 43445 Dziegielow Poland, Poland; Website (institutional address; updated 7 May 2021) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 111, in preparation (2022)
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Photos: |
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Geography: |
Statistics: This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names) |