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.
Different Conditions of Formation Experienced by Iron Meteorites as Suggested by Neutron Diffraction Investigation / Francesco, Grazzi; Antonella, Scherillo; Vanni, Moggi-Cecchi; Marco, Morelli; Giovanni, Pratesi; Stefano, Caporali. - In: MINERALS. - ISSN 2075-163X. - ELETTRONICO. - 8:(2018), pp. 1-9. [10.3390/min8010019]
Different Conditions of Formation Experienced by Iron Meteorites as Suggested by Neutron Diffraction Investigation
Francesco GrazziMembro del Collaboration Group
;Vanni Moggi-CecchiMembro del Collaboration Group
;Marco MorelliMembro del Collaboration Group
;Giovanni PratesiMembro del Collaboration Group
;Stefano Caporali
Membro del Collaboration Group
2018
Abstract
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.File | Dimensione | Formato | |
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