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Article

Thermal Annealing and Phase Transformation of Serpentine-Like Garnierite

1
Department of Computer Science, University of Verona, 37134 Verona, Italy
2
CNR-Institute for Microelectronics and Microsystems, Agrate Brianza, 20864 Agrate, Italy
3
Centro Piattaforme Tecnologiche (CPT), University of Verona, 37134 Verona, Italy
4
Department of Physics, University of Trento, 38123 Povo, Trento, Italy
5
Innovation Technology Direction, ERAMET IDEAS, 78190 Trappes, France
6
Department of Industrial Engineering, University of Trento, 38123 Povo, Trento, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Basilios Tsikouras
Minerals 2021, 11(2), 188; https://doi.org/10.3390/min11020188
Received: 4 January 2021 / Revised: 26 January 2021 / Accepted: 9 February 2021 / Published: 11 February 2021
(This article belongs to the Special Issue Emerging Insights into Serpentinites)
This study is focused on the vibrational and microstructural aspects of the thermally induced transformation of serpentine-like garnierite into quartz, forsterite, and enstatite occurring at about 620 °C. Powder specimens of garnierite were annealed in static air between room temperature and 1000 °C. The kinetic of the transformation was investigated by means of thermogravimetric and differential thermal analysis, and the final product was extensively characterized via micro-Raman spectroscopy and X-ray diffraction. Our study shows that serpentine-like garnierite consists of a mixture of different mineral species. Furthermore, these garnierites and their composition can provide details based on the mineralogy and the crystalline phases resulting from the thermal treatment. View Full-Text
Keywords: garnierite; phase transformation; TGA/DSC; XRD; micro-Raman spectroscopy garnierite; phase transformation; TGA/DSC; XRD; micro-Raman spectroscopy
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MDPI and ACS Style

Kumar, A.; Cassetta, M.; Giarola, M.; Zanatta, M.; Le Guen, M.; Soraru, G.D.; Mariotto, G. Thermal Annealing and Phase Transformation of Serpentine-Like Garnierite. Minerals 2021, 11, 188. https://doi.org/10.3390/min11020188

AMA Style

Kumar A, Cassetta M, Giarola M, Zanatta M, Le Guen M, Soraru GD, Mariotto G. Thermal Annealing and Phase Transformation of Serpentine-Like Garnierite. Minerals. 2021; 11(2):188. https://doi.org/10.3390/min11020188

Chicago/Turabian Style

Kumar, Arun, Michele Cassetta, Marco Giarola, Marco Zanatta, Monique Le Guen, Gian D. Soraru, and Gino Mariotto. 2021. "Thermal Annealing and Phase Transformation of Serpentine-Like Garnierite" Minerals 11, no. 2: 188. https://doi.org/10.3390/min11020188

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