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- Title
Thermal Annealing and Phase Transformation of Serpentine-Like Garnierite.
- Authors
Kumar, Arun; Cassetta, Michele; Giarola, Marco; Zanatta, Marco; Le Guen, Monique; Soraru, Gian Domenico; Mariotto, Gino; Tsikouras, Basilios
- Abstract
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.
- Subjects
PHASE transitions; MINERALS; DIFFERENTIAL thermal analysis; X-ray spectroscopy; ENSTATITE
- Publication
Minerals (2075-163X), 2021, Vol 11, Issue 2, p188
- ISSN
2075-163X
- Publication type
Article
- DOI
10.3390/min11020188