Russian Mineralogical Society
2nd International Conference "Crystallogenesis and Mineralogy"
Zoning structure of oxalate nephroliths

RMS-DPI code:  2007-1-87-0
Scientific session:  Session 4. Bio- and organogenetic minerals and materials
Author listing:  Izatulina A.R., Shtukenberg A.G., Golovanova O.A., Punin Yu.O.
Principal author:  Izatulina Alina Rostamovna
Language:  Russian
Abstract - Summary 
(short description):
This presentation is devoted to formation of oxalate renal stones. Two main minerals composing oxalate urolithes are whewellite forming spherulites and whedellite forming dendritic aggregates of crystals. The key role in formation of urolithes is believed to belong to inhibition action of organic components of urea. The organic admixture is incorporated in urolithes in different concentration forming fine oscillatory zoning. Since this zoning is typical for oxalate renal stones, its study seems to give new information on the calcium oxalates crystallization conditions and dynamics. Mathematical (fractal) analysis displayed chaotic (neither random nor deterministic) character of the zoning patterns. According to the correlation dimension method the complexity of the system is different for different parts of the zoning profile: parts with small amount of organic impurities reveal dimension of the strange attractor D=2.3, whereas the parts with higher impurity contents (more slow growth rates) display higher D=3.3. This argues for at least two crystallization regimes and confirms a high complexity of a system.
RMS-DPI code:  2007-1-87-0
Proceeedings volume 
in the RMS catalogue:
Crystallogenesis and Mineralogy
Pages:  174-176
File of proceedings 
 322 K
Status:  printed
Recieved:  26/04/2007
Accepted:  10/05/2007
Published on-line:  05/01/2008
Permanent address of publication:
Contact author(s):  Izatulina, Alina Rostamovna

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