Structure inheritance in the formation of mica from kaolin minerals under hydrothermal conditions

Journal Article · Wed Sep 01 04:00:00 EDT 1982 · Int. Geol. Rev.; (United States)

DOI:https://doi.org/10.1080/00206818209451047· OSTI ID:6575876

Kotov, N V; Soboleva, S V; Goylo, E A; Zvyagin, B B; Frank-Kamenetskiy, V A

Using data from electron diffraction and X-ray diffraction studies of products of hydrothermal treatment of kaolinite-group minerals (polytypic modifications: kaolinite, dickite, nacrite, and halloysite) with salt solutions, the structural mechanism is identified for solid-phase transformation from structures with two-layered 1:1 sheets to mica structures with three-layered 2:1 sheets. A composite-sheet beidellite-like phase with polar distribution of tetrahedral charge was an important intermediate product. Structural inheritance in these transformations takes the form of preservation of the sequential orientation of the sheets and the degree of structural perfection.

• OSTI ID: 6575876
• Journal Information: Int. Geol. Rev.; (United States), Journal Name: Int. Geol. Rev.; (United States) Vol. 24:9; ISSN IGREA
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
152003 -- Geothermal Data & Theory-- Rock-Water-Gas Interactions
58 GEOSCIENCES
580300* -- Mineralogy
Petrology
& Rock Mechanics-- (-1989)
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRON DIFFRACTION
HYDROTHERMAL ALTERATION
KAOLINITE
MICA
MICROSTRUCTURE
MINERALOGY
MINERALS
OXYGEN COMPOUNDS
PHASE STUDIES
SCATTERING
SILICATE MINERALS
SILICATES
SILICON COMPOUNDS
X-RAY DIFFRACTION