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http://dx.doi.org/10.9727/jmsk.2018.31.4.287

Amorphous Silica in Soil Silt  

Jeong, Gi Young (Department of Earth and Environmental Sciences, Andong National University)
Publication Information
Journal of the Mineralogical Society of Korea / v.31, no.4, 2018 , pp. 287-293 More about this Journal
Abstract
Amorphous silica ($SiO_2$) silt grains were found in some soils of Korean Peninsula. Scanning electron microscopy of polished section of soils revealed ellipsoidal amorphous $SiO_2$ grains with numerous submicron pores concentrated in the interior. Their amorphous structure was confirmed by lattice imaging and electron diffraction under transmission electron microscope. Amorphous $SiO_2$ grains were not found in the eolian sediment of the Chinese loess plateau. Although the origin of the amorphous $SiO_2$ grain is uncertain, they are likely either phytolith or weathering product of volcanic ash. The amorphous $SiO_2$ silt grains are not useful as a tracer of long-range transport mineral dust in soils.
Keywords
Amorphous; silica; soil; silt; transmission electron microscopy; mineral dust;
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Times Cited By KSCI : 3  (Citation Analysis)
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