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Conversion of serpentine to smectite under hydrothermal condition: Implication for solid-state transformation by Shichao Ji; Jianxi Zhu; Hongping He; Qi Tao; Runliang Zhu; Lingya Ma; Meng Chen; Shangying Li; Junming Zhou is a Earth and Planetary Sciences article available to read on EtoBox.
What is Conversion of serpentine to smectite under hydrothermal condition: Implication for solid-state transformation about?
Understanding clay mineral transformation is of fundamental importance to grasping phyllosilicate crystal chemistry and unraveling geochemical processes. In this study, hydrothermal experiments were conducted on lizardite and antigorite, to investigate the possibility of the transformation from serpentine to smectite, the effect of precursor minerals' structure on the transformation and the transformation mechanism involved. The reaction products were characterized using XRD, TG, HRTEM, and 27 Al MAS NMR. The results show that both lizardite and antigorite can be converted to smectite, but such conversion is much more difficult than that of kaolinite group minerals. The successful transformation is mainly evidenced by the occurrence of the characteristic (001) reflection of smectite at 1.2-1.3 nm in the XRD patterns and smectite layers with a thickness of 1.2-1.3 nm in HRTEM images of hydrothermal products as well as the dehydroxylation of the newly formed smectite at a higher temperature in comparison to that of the starting minerals. The difficulty for the transformation of serpentine to smectite may be due to the lack of enough available Al in the reaction system, in which the s
Who reads Conversion of serpentine to smectite under hydrothermal condition: Implication for solid-state transformation?
It is typically read by researchers, students, and practitioners in Earth and Planetary Sciences.
- Author
- Shichao Ji; Jianxi Zhu; Hongping He; Qi Tao; Runliang Zhu; Lingya Ma; Meng Chen; Shangying Li; Junming Zhou
- Publisher
- Mineralogical Society of America
- Published
- 2018
- Language
- EN
- Field
- Earth and Planetary Sciences (Physical Sciences)