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Minerals 2018, 8(8), 311; https://doi.org/10.3390/min8080311

Synchrotron Nano-Diffraction Study of Thermally Treated Asbestos Tremolite from Val d’Ala, Turin (Italy)

1
European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38040 Grenoble, France
2
Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, I-41121 Modena, Italy
3
CIGS, University of Modena and Reggio Emilia, I-41121 Modena, Italy
*
Author to whom correspondence should be addressed.
Received: 29 June 2018 / Revised: 18 July 2018 / Accepted: 20 July 2018 / Published: 24 July 2018
(This article belongs to the Special Issue Occurrence, Crystal-Chemistry and Properties of Fibrous Minerals)
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Abstract

Nowadays, due to the adverse health effects associated with exposure to asbestos, its removal and thermal inertization has become one of the most promising ways for reducing waste risk management. Despite all the advances in structure analysis of fibers and characterization, some problems still remain that are very hard to solve. One challenge is the structure analysis of natural micro- and nano-crystalline samples, which do not form crystals large enough for single-crystal X-ray diffraction (SC-XRD), and their analysis is often hampered by reflection overlap and the coexistence of multiple fibres linked together. In this paper, we have used nano-focused synchrotron X-rays to refine the crystal structure of a micrometric tremolite fibres from Val d’Ala, Turin (Italy) after various heat treatment. The structure of the original fibre and after heating to 800 °C show minor differences, while the fibre that was heated at 1000 °C is recrystallized into pyroxene phases and cristobalite. View Full-Text
Keywords: asbestos; tremolite; synchrotron radiation; nano-diffraction; recrystallization asbestos; tremolite; synchrotron radiation; nano-diffraction; recrystallization
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Giacobbe, C.; Wright, J.P.; Di Giuseppe, D.; Zoboli, A.; Zapparoli, M.; Gualtieri, A.F. Synchrotron Nano-Diffraction Study of Thermally Treated Asbestos Tremolite from Val d’Ala, Turin (Italy). Minerals 2018, 8, 311.

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