Russian Mineralogical Society
2nd International Conference "Crystallogenesis and Mineralogy"
The compositional features of diamond growth medium: from study of microinclusions in natural diamonds

RMS-DPI code:  2007-1-124-0
Scientific session:  Session 5. Crystal chemistry and crystal morphology of minerals
Author listing:  Zedgenizov D.A., Ragozin A.L., Shatsky V.S.
Principal author:  Zedgenizov Dmitry Alexandrovich
Language:  Russian
Abstract - Summary 
(short description):
Micro-inclusions in the studied diamonds represent a bulk sample of the fluids from which the diamonds crystallized. The bulk compositions of micro-inclusions have been studied in cuboid diamonds from the Udachnaya and Internatsionalnaya kimberlite pipes (Yakutia). They define a continuous carbonatitic to saline range and carbonatitic to hydrous-silicic range consequently. In general the major- and trace-element patterns of the trapped fluids in studied diamonds are similar to those of kimberlites and carbonatites. The observed geochemical features are consistent with a genetic link between the diamond-forming fluids and ephemeral carbonatitic fluids/melts which may be precursors of the host kimberlite. These fluids/melts may originate either from the metasomatic and influx of carbonatitic agents or from partial melting of previously carbonated eclogites and peridotites. Some elemental variations may be explained by fractional crystallization of such fluid/melts, or mixing between fluids with different compositions.
RMS-DPI code:  2007-1-124-0
Proceeedings volume 
in the RMS catalogue:
Crystallogenesis and Mineralogy
Pages:  269-271
File of proceedings 
 341 K
Status:  printed
Accepted:  28/04/2007
Published on-line:  05/01/2008
Permanent address of publication:
Contact author(s):  Zedgenizov, Dmitry Alexandrovich

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