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| Northwest Africa 8409 | |||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 8409 This is an OFFICIAL meteorite name. Abbreviation: NWA 8409 Observed fall: No Year found: 2013 Country: (Northwest Africa) Mass:  434 g | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 140 approved meteorites classified as Achondrite-ung. [show all] Search for other: Achondrites, Ungrouped achondrites | ||||||||||||||||||||||||||||||
| Comments: | Approved 26 May 2016 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 105:
Northwest Africa 8409 (NWA 8409) (Northwest Africa) Purchased: 2013 Jun Classification: Ungrouped achondrite History: Purchased by Marc Jost in June 2013 from several Moroccan dealers at the Ensisheim Show. Physical characteristics: A group of essentially identical dark green, uncrusted stones ranging in size from 99 g to <1 g. Distinctive green clinopyroxene and gray, frosty plagioclase are evident. Petrography: (A. Irving and S. Kuehner, UWS) Cumulate igneous texture. Composed mainly of calcic plagioclase, diopside and forsterite with accessory Cr-bearing troilite and kamacite. Lobate forsterite grains are commonly associated with elongate pores. Geochemistry: Olivine (Fa4.5-4.6, FeO/MnO = 36-41, N = 3), clinopyroxene (Fs1.8-2.2Wo44.3-43.8, FeO/MnO = 12-15, N = 3). Classification: Achondrite (ungrouped). Paired with NWA 7325, NWA 8014 and other stones from the Bir Abbas site. Specimens: 20.4 g including one polished piece at UWB; remainder held by SJS. | ||||||||||||||||||||||||||||||
| Data from: MB105 Table 0 Line 0: |
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| Institutions and collections |
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023) SJS: Space Jewels Switzerland, 2555 Brügg, Switzerland (private address; updated 3 Jan 2010) |
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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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| Photos: |
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| Geography: |
Statistics: This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names) | ||||||||||||||||||||||||||||||