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RMS Annual Session combined with the Fedorov Session 2012
Saint Petersburg, Russia
8-10 October 2012
2012minsoc.ru
http://www.minsoc.ru/2012/
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Metamorphogenic-hydrothermal Sr-bearing minerals in metakimberlites of East-Siberian platform

RMS-DPI code:  2012-1-87-0
Scientific session:  M2. Mineralogical and petrological markers of the mineral/rock genesis. Minerals, ores and rocks as fingerprints
Author listing:  Sokolova E.L., Prokofiev V.Yu.
Principal author:  Sokolova Elena Leonidovna
Language:  Russian
Abstract - Summary 
(short description):
Sr-bearing minerals celestine and srontianite are not uncommon in altered kimberlites of Jakutia. According to our data, these alterations were caused by processes of regional low-grade metamophism of plunging of post-trappean age (232 122 ). Celestine, strontianite and associated barite and calcite/dolomite form veinlets and nests, filling fractures of hydrorupture in metakimberlites. Celestine are partially or completely replaced by strontianite in zones of jointing due to increase of CO2 fugacity in metamorphogenic fluid; it usually happens under temperature decrease. Mineral associations, thermobarometry data and isotope compositions of Sr, C and O indicate the metamorphogenetic-hydrothemal genesis of celestine and srontianite. Gas-liquid inclusions composition in celestine shows that the mineral was formed under temperatures from 306 to 82 with the participation of chloride brines, the source of which, obviously, were evaporites from terrigene-carbonaceous series, containing kimberlite pipes.
 
RMS-DPI code:  2012-1-87-0
Proceeedings volume 
in the RMS catalogue:
 
Mineralogy in whole space of the word.
File of proceedings 
(PDF): 
 231 K
Status:  printed
Recieved:  31/05/2012
Accepted:  29/08/2012
Published on-line:  26/10/2012
Permanent address of publication:  http://www.minsoc.ru/2012-1-87-0/
Contact author(s):  Sokolova, Elena Leonidovna
 

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