Dissolution of Interlayers from Intergradient Soil Clays after Preheating at 400°C

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Science  12 Jun 1959:
Vol. 129, Issue 3363, pp. 1616-1617
DOI: 10.1126/science.129.3363.1616


Dehydroxylated interlayers have been removed from chlorite-vermiculite-montmorillonite intergrades by boiling the preheated sample in 0.5N NaOH for 2.5 minutes. Elements extracted can be conveniently analyzed spectrophotometrically. A convenient method of estimating the amount of elements present in interlayer positions and preparing the sample for analysis for expanding and nonexpanding mineral components is thus provided.