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The x-ray identification and crystal structures of clay minerals

George Brown
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The article was published on 1961-01-01 and is currently open access. It has received 966 citations till now. The article focuses on the topics: Clay minerals.

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Alga-Like Fossils from the Early Precambrian of South Africa

TL;DR: Micropaleontological studies of carbonaceouis chert from the Fig Tree Series of South Africa revealed the presence of spheroidal microfossils, here designated Archaeosphaeroides barbertonensis, interpreted as probably representing the remnants of unicellular alga-like organisms.
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The alteration of olivine in basaltic and associated lavas

TL;DR: Olivines which cool under oxidizing conditions exsolve iron oxides at high temperature, and at low temperatures break down to essentially chloritic materials as discussed by the authors, producing an orientated assemblage of goethite and interstratified phyllosilicates containing a smectite.
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Evaluating the adsorptive capacity of montmorillonitic and calcareous clays on the removal of several heavy metals in aqueous systems

TL;DR: In this paper, the authors aimed to achieve mineralogical and spectroscopic characterization of Late Cretaceous clays of Aleg formation (Coniacian-Lower Campanian system), Tunisia, for the removal of several toxic metals in aqueous system.
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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).
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The Mineralogy of Glauconite

TL;DR: In this paper, a good corre- lation has been found between the number of potassium atoms per O(OH)2 in structural formulas calculated from the chemical analyses and the proportion of illite layers as determined by X-ray powder diffraction methods.