Kaolinite to halloysite-7 å transformation in the kaolin deposit of São Vicente De Pereira, Portugal

Clays and Clay Minerals

Volumn 49, Issue 6, 2001, Pages 596-607

  Bobos, Iuliu ^a   Duplay, Joelle ^a   Rocha, Joao ^a   Gomes, Celso ^a  

^a UNIVERSITY OF AVEIRO   (Portugal)

Author keywords

Hydration; Kaolinite to halloysite 7 transformation; Portugal; Rolling and folding; Surface reaction control

Indexed keywords

ALUMINUM; FOURIER TRANSFORM INFRARED SPECTROSCOPY; MINERAL RESOURCES; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY; ROLLING; TRANSMISSION ELECTRON MICROSCOPY; X RAY DIFFRACTION;

KAOLINITE;

KAOLIN;

HALLOYSITE; HYDRATION; KAOLINITE; MINERAL ALTERATION; TRANSFORMATION; X-RAY DIFFRACTION;

PORTUGAL; SAO VICENTE DE PEREIRA;

EID: 0035760282     PISSN: 00098604     EISSN: None     Source Type: Journal    
DOI: 10.1346/CCMN.2001.0490609     Document Type: Article

References (47)

1. Feldspar weathering in a lateritic saprolite
2. Polytypism of 1:1 layer silicates
3. Halloysite-a critical assessment
4. Analytical transmission electron microscope studies of plagioclase, muscovite and K-feldspar weathering
5. Morphology and structure of endellite and halloysite
6. Greisen and post-greisen alteration in the kaolin deposit of São Vicente de Pereira (Portugal)
7. Dissolution of K-feldspar into Si-Al gel and crystallization of halloysite identified in the kaolin deposit of São Vicente de Pereira (Portugal)
8. Recognition of intermediates in the possible transformation of halloysite to kaolinite in weathering profiles
9. Dehydration of synthetic hydrated kaolinite: A model for the dehydration of halloysite (10 Å)
10. Synthesis of a 10 Å hydrated kaolinite
11. A study of deep weathering profile on granite in peninsular Malaysia: Mineralogy of the clay, silt and sand fractions
12. Kaolin minerals: Structures and stability
13. How the microfabric of soils may be influenced by the structure and chemical composition of parent minerals
14. Variability in "crystallinity" values among the kaolin deposits of the coastal plain of Georgia and South Carolina
15. A study of clay minerals by means of single-crystal electron diffraction diagram - The structure of tubular kaolin
16. Transmission electron microscopic study of the kaolinisation of muscovite
17. Classification of kaolins exemplified by their textures in scanning electron microscopy
18. Observation of the hydrated form of tubular halloysite by an electron microscope equipped with an environmental cell
19. Surface layer types of kaolinite: A high resolution transmission electron microscopy study
20. Analytical electron microscopy in clays and other phyllosilicates: Loss of elements from a 90-nm stationary beam of 300 KeV electrons
21. Interlayer and intercalation complexes of clay minerals
22. A critique of diffuse double layer models applied to colloid and surface chemistry
23. Weathering mineral facies in altered granites: The importance of local small-scale equilibrium
24. 27Al NMR spectroscopy
25. Determination of structural defects in phyllosillicates by X-ray powder diffraction
26. An expert system for the structural characterization of kaolinites
27. The Hinckley index for kaolinites
28. Particle interactions in aqueous kaolinite suspensions. I. Effect of pH and electrolyte upon the mode of particle interaction in homoionic sodium kaolinite suspensions
29. Fire clay type kaolinite or fire clay minerals? Experimental classification of kaolinite-halloysite minerals
30. Análise da deformação da zona de cisalhamento Porto-Tomar na transversal de Oliveira de Azeméis
31. Weathering of granitic muscovite to kaolinite and halloysite and plagioclasederived kaolinite to halloysite
32. 27Al magic-angle-spinning NMR studies of the thermal transformation of kaolinite
33. 27Al satellite transition MAS NMR spectroscopy of kaolinite
34. Why does halloysite roll? - A new model
35. An electron optical investigation of the alteration of kaolinite to halloysite
36. Experimental transformation of kaolinite to halloysite
37. Transformation of micas in the process of kaolinization of granites and gneisses
38. Morphology of minerals
39. Modification of charge density during the kaolinite to hallosyite-7 Å transformation
40. Lattice expansion of kaolin minerals by treatment with potassium acetate
41. An occurrence of polymorphic halloysite in granite saprolite of the Bayerischer Wald, Germany