Russian Mineralogical Society
RMS Annual Session combined with the Fedorov Session 2012
90Sr radionuclide accumulation in granitoids of architectural complexes of St. Petersburg

RMS-DPI code:  2012-1-112-0
Scientific session:  M3. Environmental mineralogy and geochemistry
Author listing:  Felitsyn S.B., Alfimova N.A., Serebritsky I.
Principal author:  Felitsyn Sergey, Serebritsky Ivan
Language:  Russian
Abstract - Summary 
(short description):
The research of isotope structure of strontium carried out in 2010 in field spars from breeds of decorative facing of a fencing of Svetlana plant revealed isotope existence 90Sr in a layer in thickness of 300 microns, having contact to meteoric waters within the last 45 years. The contents 90Sr in an external zone of crystals of a plagioclase makes 0.1-0.12 ng/g at the maintenance of Sr from 590 to 630 mkg/g. At distance more than 300 microns from an external surface of crystals the isotope 90Sr isn\'t found.
Accumulation 90Sr in a zone of ~300 microns microclines and the plagioclases, having contact to meteoric waters, thus potassium field spars accumulate 90Sr more intensively in comparison with plagioclases. The similar phenomenon is connected with potassium replacement by strontium in a lattice of field spars as a result of low-temperature ion-exchange reactions between meteoric waters and a firm phase. Wide application of granitoids at construction of St. Petersburg allows to consider these breeds as important depositary for 90Sr.
 
Date of presentation:  10/10/2012
Presentation Place:  Mining University, Hall 1166
 
RMS-DPI code:  2012-1-112-0
Proceeedings volume 
in the RMS catalogue:
 
Mineralogy in whole space of the word.
File of proceedings 
(PDF): 
 189 K
Status:  printed
Accepted:  29/08/2012
Published on-line:  05/11/2012
Permanent address of publication:  http://www.minsoc.ru/2012-1-112-0/
Contact author(s):  Serebritsky, Ivan

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