IR spectroscopy of quartz nanocrystals formed during intense crushing of a heterogeneous material (granite)

Vettegren, V. I.; Mamalimov, R. I.; Sobolev, G. A.; Kireenkova, S. M.; Morozov, Yu. A.; Smul’skaya, A. I.

doi:10.1134/s1063783411120274

Cited by 5 publications

(3 citation statements)

References 21 publications

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“…Investigations (Vettegren' et al, 2011a(Vettegren' et al, , 2012a(Vettegren' et al, , 2012b(Vettegren' et al, , 2014 showed that the determination of quartz nanocrys tal size in rocks is conveniently done by using the results from the analysis of the shape of the band whose maxi mum in the reflection spectrum is at 693.4 cm -1 . The ATR spectra (see Fig.…”

Section: Estimating the Sizes Of Nanocrystals That Are Contained In Tmentioning

confidence: 99%

“…The difference is caused by phonon scattering at boundaries of albite and quartz nanocrystals (Sobolev, 2011;Vettegren' et al, 2011aVettegren' et al, , 2011bKulik, 2011). The scattering causes departures from the selection rules for impulses:…”

Section: Estimating the Sizes Of Nanocrystals That Are Contained In Tmentioning

confidence: 99%

“…In silicate materials breaking affects SiOSi bonds (Streletskii, 1986;Kawaguchi, 1998;Vettegren' et al, 2008Vettegren' et al, , 2011aVettegren' et al, , 2012aVettegren' et al, , 2012b that are situated on the walls of microscopic cracks. When such bonds are bro ken, the result is S-O free radicals and Si: centers (Silin' andTrukhin, 1985, Kawaguchi, 1998;Streletskii, 1986).…”

Section: The Mechanism That Is Responsible For the Generation Of The mentioning

confidence: 99%

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A study of nanocrystals and the glide-plane mechanism

Sobolev

Vettegren

Ruzhich

et al. 2015

J. Volcanolog. Seismol.

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This study is concerned with the glide plane that is produced during a dynamic fracture in a rock mass and with the section that is perpendicular to the plane. The techniques that were used include X ray, infrared, and fluorescent spectroscopy. It was found that the plane consists of quartz and albite nanocrystals surrounded with water that contain numerous defects, viz., "broken" chemical bonds and admixture atoms. The formation of such a structure seems to have reduced the friction coefficient and produced conditions for the development of an unstable slip in the rock mass.

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Section: Estimating the Sizes Of Nanocrystals That Are Contained In Tmentioning

confidence: 99%