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| Northwest Africa 10515 | |||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 10515 This is an OFFICIAL meteorite name. Abbreviation: NWA 10515 Observed fall: No Year found: 2015 Country: Morocco Mass:  557 g | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 110 approved meteorites classified as Eucrite-unbr. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||||
| Comments: | Approved 12 Feb 2016 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 105:
Northwest Africa 10515 (NWA 10515) Morocco Purchased: 2015 April Classification: HED achondrite (Eucrite, unbrecciated) History: Purchased by team eegooblago (Brahim Tahiri, Dustin Dickens and Sean Tutorow) from a dealer in Morocco in April 2015. Physical characteristics: Beige in color. Medium-grained white plagioclase and brown pyroxene in the matrix, with areas with smaller mineral grain sizes. Petrography: (S. Hutchinson, UWO) Plagioclase and pyroxene are the main mineral phases of the matrix. Chromite was also identified. Areas of 3-4 mm consist of finer-grained materials (~0.1 mm) relative to the rest of the sample (0.5-2 mm). These areas are also more silica-rich, composed primarily of plagioclase, pyroxene and silica polymorphs. The meteorite is unbrecciated. Geochemistry: Mineral compositions and geochemistry: low-Ca pyroxene: Fs57.1±2.4Wo7.2±2.7 (Fs53.2-59.3Wo5.3-11.9, n=20, Fe/Mn=28.6-32.0); Ca-pyroxene: Fs29.8±0.4Wo40.7±0.3 (Fs29.5-30.2Wo40.4-41.0, n=20, Fe/Mn=28.8-31.8); calcic plagioclase: An89.3±1,4 (An86.8-90.1, n=20). Classification: Eucrite, unbrecciated Specimens: 25.4 g including a thin section and polished mount at UWO. Sean Tutorow holds the main mass. | ||||||||||||||||||||||||||||||
| Data from: MB105 Table 0 Line 0: |
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| Institutions and collections |
UWO: University of Western Ontario, Department of Earth Sciences, BGS 1026, 1151 Richmond St. N, London, Ontario, Canada N6A 5B7, Canada (institutional address; updated 18 Jul 2015) |
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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:
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Statistics: This is 1 of 1706 approved meteorites from Morocco (plus 26 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||