Journal ArticleDOI
Expansibility of some vermiculites
TLDR
In this article, the thermal expansion of four samples of vermiculite, one sample containing mica and mica interstratification from various geological origins have been studied, and it is suggested that the sudden release of interlayer water is not the only factor influencing the temperature expansion of these samples, e.g. the presence of relicts of altered mica, loss of OH groups or chemical composition.About:
This article is published in Applied Clay Science.The article was published on 1989-12-01. It has received 48 citations till now. The article focuses on the topics: Vermiculite & Mica.read more
Citations
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Journal ArticleDOI
X-ray diffraction studies of the thermal behaviour of commercial vermiculites
TL;DR: In this article, the vermiculites were divided into two types: type 1 (Sta. Olalla, Piaui and Goias) and type 2 (Piaui, Goias and Olalla).
Book ChapterDOI
Thermally Modified Clay Minerals
TL;DR: In this paper, four temperature ranges are distinguished: (1) temperatures above dehydration, but below dehydroxylation, when clay minerals lose adsorbed and hydration water: the interlayer spaces collapse, pore space is changed and surface acidity is substantially altered.
Journal ArticleDOI
Synthesis of nano-layered vermiculite of low density by thermal treatment
TL;DR: In this article, a nano-layered vermiculite was modified by thermal treatment up to 900°C and structural and textural studies were carried out using scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis.
Journal ArticleDOI
On the mechanism of exfoliation of ‘Vermiculite’
TL;DR: In this paper, the authors investigated the mechanism of vermiculite exfoliation by using XRD to determine the precise mineralogical composition of six samples of "Vermiculite".
Journal ArticleDOI
Thermal properties of sodium-exchanged palabora vermiculite
Herminio F. Muiambo,Walter Wilhelm Focke,Maria T. Atanasova,Isbe Van der Westhuizen,Louwrens R. Tiedt +4 more
TL;DR: Palabora as discussed by the authors represents an interstratified vermiculite-biotite containing less than 50% vermiculate, and was prepared by immersion in saturated brine at ambient conditions.
References
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Book
Crystal Structures of Clay Minerals and their X-ray Identification
G. W. Brindley,G. Brown +1 more
TL;DR: In the years 1930-1950 clay mineral identification involved mainly a combination of X-ray powder diffraction and chemical analysis with some assistance from other techniques, notably differential thermal analysis.