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| Northwest Africa 10031 | |||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 10031 This is an OFFICIAL meteorite name. Abbreviation: NWA 10031 Observed fall: No Year found: 2014 Country: Morocco Mass:  115 g | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 133 approved meteorites classified as EL6. [show all] Search for other: EL chondrites, Enstatite chondrites, Enstatite chondrites (type 4-7), and Enstatite-rich meteorites | ||||||||||||||||||||||||||||||
| Comments: | Approved 3 Apr 2015 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 104:
Northwest Africa 10031 (NWA 10031) Morocco Purchased: 2014 Classification: Enstatite chondrite (EL6) History: Purchased by Nicola Castellano at the Genova Mineral Fair in May 2014 from a Moroccan dealer. Physical characteristics: A single piece weighing 115 g totally covered by fusion crust. Petrography: (V. Moggi Cecchi, G. Pratesi, S. Caporali, UniFi); The thin section displays an equilibrated texture, with very rare relic chondrules set in a matrix consisting of pyroxene, with minor plagioclase. No iron oxides/hydroxides veinlets can be observed. Relic chondrules range from 0.4 to 1.0 mm in diameter and are mainly RP type, with minor GP. Kamacite and troilite are the main opaque phases, partially weathered to iron oxides. Accessory phases are alabandite and daubreelite as blades in troilite. The presence of alabandite, An content of plagioclase and Si content of kamacite point to a classification as EL chondrite. Geochemistry: Orthopyroxene (Fs0.4En98.1Wo1.5), plagioclase (An16.3Or5.8); Si in kamacite = 0.8 wt.%, Ti in troilite = 6.1 wt.% Classification: Enstatite chondrite (EL6), S1, W3; probably paired with NWA 10037. Specimens: A total of 21.3 g specimen and one thin section is on deposit at MSN-FI. Castellano holds the main mass. | ||||||||||||||||||||||||||||||
| Data from: MB104 Table 0 Line 0: |
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| Institutions and collections |
MSN-FI: Museo di Storia Naturale “La Specola”, Sez. Mineralogia – Sistema Museale dell'Università degli Studi di Firenze
Via Giorgio La Pira, 4 – 50121 Firenze, Italy; Website (institutional address; updated 24 Oct 2022) UniFi: Università degli Studi di Firenze, P.zza S. Marco, 4 - 50121 Firenze, Italy (institutional address; updated 14 Sep 2013) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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Geography:
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Statistics: This is 1 of 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||
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| Revision history: |
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