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| Northwest Africa 16393 | |||||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 16393 This is an OFFICIAL meteorite name. Abbreviation: NWA 16393 Observed fall: No Year found: 2023 Country: Morocco Mass:  25.1 g | ||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 675 approved meteorites classified as Ureilite. [show all] Search for other: Achondrites, Ureilites | ||||||||||||||||||||||||||||||||
| Comments: | Approved 3 Jan 2024 | ||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 112:
Northwest Africa 16393 (NWA 16393) Morocco Purchased: 2023 Jun Classification: Ureilite Petrography: (J. Gattacceca, CEREGE) Blocky of dominant olivine and pyroxene aggregate with grain size 2 mm. Olivine shows reduced rims. FeNi metal is present along grain rims, and as veinlets and µm-sized aligned grains in olivine. Troilite is found associated with metal as ~5 µm grains enclosed in olivine. Abundant carbon material is present, very likely diamond in view of the difficulty in sawing and polishing the meteorite. Geochemistry: Olivine Fa19.2±0.2, Cr2O3 0.74±0.08 wt%, CaO 0.38±0.02 wt% (n=5). Olivine rims down to Fa4.0. Pyroxene Fs16.0Wo10.0, Al2O3 0.61 wt%, Cr2O3 1.22 wt% (n=2). Classification: Ureilite Specimens: Type specimen at CEREGE. Main mass with Kuntz. | ||||||||||||||||||||||||||||||||
| Data from: MB112 Table 0 Line 0: |
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| Institutions and collections |
CEREGE: CEREGE
BP 80
Avenue Philibert, Technopole de l'Arbois
13545 Aix-en-Provence Cedex 4
France, France (institutional address; updated 10 Jun 2023) Kuntz: Fabien Kuntz, France; Website (private address) |
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| Catalogs: |
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| References: | Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Cartier C., Consolmagno G., Goodrich C., Greshake A., Gross J., Joy K. H., Miao B. and Zhang B. (2024) The Meteoritical Bulletin, no. 112. Meteoritics & Planetary Science 59, 1820–1823. ?
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Geography:
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Statistics: This is 1 of 2163 approved meteorites from Morocco (plus 32 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||||