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Open AccessArticle

Different Conditions of Formation Experienced by Iron Meteorites as Suggested by Neutron Diffraction Investigation

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Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
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ISIS Facility Rutherford Appleton Laboratory, Didcot OX11, UK
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Museo di Storia Naturale, Università degli Studi di Firenze, Via La Pira 4, 50121 Firenze, Italy
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Museo di Scienze Planetarie-Fondazione Parsec, Via Galcianese 20H, 59100 Prato, Italy
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Dipartimento di Scienze della Terra, Università degli Studi di Firenze, Via La Pira 4, 50121 Firenze, Italy
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Dipartimento Ingegneria Industriale, Via S. Marta 3, 50139 Firenze, Italy
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Author to whom correspondence should be addressed.
Minerals 2018, 8(1), 19; https://doi.org/10.3390/min8010019
Received: 22 September 2017 / Revised: 5 January 2018 / Accepted: 8 January 2018 / Published: 12 January 2018
(This article belongs to the Special Issue High Pressure Minerals)
In this communication, we report the results of a preliminary neutron diffraction investigation of iron meteorites. These planetary materials are mainly constituted by metallic iron with variable nickel contents, and, owing to their peculiar genesis, are considered to offer the best constrains on the early stages of planetary accretion. Nine different iron meteorites, representative of different chemical and structural groups, thought to have been formed in very different pressure and temperature conditions, were investigated, evidencing variances in crystallites size, texturing, and residual strain. The variability of these parameters and their relationship, were discussed in respect to possible diverse range of petrological conditions, mainly pressure and cooling rate, experienced by these materials during the crystallization stage and/or as consequence of post accretion events. View Full-Text
Keywords: neutron scattering; iron meteorites; residual strain; texturing neutron scattering; iron meteorites; residual strain; texturing
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Grazzi, F.; Scherillo, A.; Moggi-Cecchi, V.; Morelli, M.; Pratesi, G.; Caporali, S. Different Conditions of Formation Experienced by Iron Meteorites as Suggested by Neutron Diffraction Investigation. Minerals 2018, 8, 19.

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