A TITANIUM-RICH SOIL CLAY |
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| Authors: | D C BAIN |
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| Institution: | The Macaulay Institute for Soil Research, Craigiebuckler, Aberdeen |
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| Abstract: | A peaty podzol developed on glacial drift derived from chlorite-schists near Loch Awe, Argyll, contains up to 25 per cent titanium dioxide in the clay fractions after removal of organic matter and free iron oxides. Electron microscopy reveals that this titanium is almost entirely in the form of cryptocrystalline anatase which is amorphous to X-rays and which is removed by the HF method normally used to concentrate anatase and rutile in soils. The anatase has probably formed as a result of the weathering of sphene. |
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