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Annual Session 2009
Saint Petersburg, Russia
6-8 October 2009
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Conferences & Meetings RMS Annual Session "Ontogeny of minerals applied to scientific and industrial uses (to the 100 year anniversary of Prof. Dmitry Grigoriev)"
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Refinement of phase and structural ratios between opal, cristobalite and tridymite in early Paleogenic siliceous rocks

RMS-DPI code:  2009-1-82-0
Scientific session:  2. Modern analytical methods used for studies of mineral formation processes.
Author listing:  Naumkina N.I., Lygina T.Z., Ilicheva O.M., Afanasieva N.I.
Principal author:  Naumkina Natalya
Language:  Russian
Abstract - Summary 
(short description):
Is examined the possibility of applying the Rietveld-analysis for the description opal-cristobalite-tridymite phase in the siliceous rocks (mold box, tripoli, kieselguhr) with the aid of the X-ray profile analysis. Are noted, that the ratio of the amplitudes of reflexes to their sum total has a value of approximately 31,50 for d~0.43nm, 53,48 (0.41nm) and 15,02 (0.25 nm) independent of the content of OCT-phase in the sample.
 
RMS-DPI code:  2009-1-82-0
Proceeedings volume 
in the RMS catalogue:
 
Ontogeny of minerals applied to scientific and industrial uses (to the 100 year anniversary of Prof. Dmitry Grigoriev)
Pages:  239-241
File of proceedings 
(PDF): 
 414 K
Status:  printed
Accepted:  27/07/2009
Published on-line:  16/10/2009
Permanent address of publication:  http://www.minsoc.ru/2009-1-82-0/
Contact author(s):  Naumkina, Natalya
 
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