Russian Mineralogical Society
200th Anniversary Meeting of the Russian Mineralogical Society
Natural apophyllite: thermochemical, X-ray, IR- and Raman spectroscopic study

RMS-DPI code:  2017-1-140-0
Scientific session:  4. Minerals as indicators of the rock and ore formation.
Author listing:  Gritsenko Yu.D., Ogorodova L.P., Vigasina M.F., Melchakova L.V., Spiridonov E.M., Bryzgalov I.A., Ksenofontov D.A., Kiseleva I.A.
Principal author:  Kiseleva Irina A.
Language:  Russian
Abstract - Summary 
(short description):
A thermochemical, X-ray, IR- and Raman spectroscopy study of the natural minerals of the apophyllite group: fluorophosphite - (K) KCa4 [Si8O20] F. 8H2O (Maharashtra, India) (I) and hydroxylapophyllite- (K) KCa4 [Si8O20] OH. 8H2O (Norilsk, Russia) (II). The first data on enthalpies of formation from the elements of the minerals studied are obtained on the high-temperature heat conducting microcalorimeter Tiana-Calvet \"Setaram\" (France) by the method of melt calorimetry of dissolution (-13205 13 kJ / mol (I) and -13054 20 kJ / mol (II)). The values of their standard entropies and Gibbs energies of formation were estimated.
Key words: fluorapophyllite (K), hydroxylapophyllite (K), enthalpy of formation, Calvet microcalorimetry
 
RMS-DPI code:  2017-1-140-0
Pages:  186-187
File of proceedings 
(PDF): 
 115 K
Status:  printed
Accepted:  16/09/2017
Published on-line:  07/12/2017
Permanent address of publication:  http://www.minsoc.ru/2017-1-140-0/
Contact author(s):  Kiseleva, Irina A.

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