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Northwest Africa 4885 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 4885 This is an OFFICIAL meteorite name. Abbreviation: NWA 4885 Observed fall: No Year found: 2006 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 218 approved meteorites classified as Eucrite-br. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 12 Mar 2019 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 108:
Northwest Africa 4885 (NWA 4885) (Northwest Africa) Purchased: 2006 Classification: HED achondrite (Eucrite, brecciated) History: The meteorite was purchased in 2006 from a local meteorite dealer in Erfoud, Morocco. Physical characteristics: Five greyish fragments partly covered with fusion crust Petrography: Brecciated eucrite composed of coarse-grained basaltic clasts set into more fine-grained matrix. Dominant minerals are exsolved pyroxene and calcic plagioclase. Minor phases include silica, chromite, ilmenite, and FeS; no metallic Fe was found. Geochemistry: low-Ca pyroxene: Fs53.1±2.1Wo9.1±2.7 (Fs50.4-65.0Wo5.6-12.4, n=10, FeO/MnO=29-31); Ca-pyroxene: Fs35.1±6.7Wo32.9±7.7 (Fs26.0-42.3Wo24.1-43.3, n=12, FeO/MnO=27-32); calcic plagioclase: An86.4±5.8 (An78.6-91.3, n=11) | ||||||||||||||||||||||||||||
Data from: MB108 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) Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (private address) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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Geography: |
Statistics: This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |