Russian Mineralogical Society
RMS Annual Session combined with the Fedorov Session 2012
Water and carbon solubility in rock-forming mineral structures of mantle xenoliths in basalts and kimberlites

RMS-DPI code:  2012-1-27-0
Scientific session:  M2. Mineralogical and petrological markers of the mineral/rock genesis. Minerals, ores and rocks as fingerprints
Author listing:  Babushkina M.S., Semenova T.F., Petrova M.N.
Principal author:  Babushkina Miryam Samuilovna
Language:  Russian
Abstract - Summary 
(short description):
The conditions and limits of the solubility of water (¯, 2) and carbon in nominally anhydrous mineral structures (NAM: olivines, orthopyroxenes, clinopyroxenes, garnets) of the mantle xenoliths derived from basalts (Spitsbergen, Pribaikalie), and kimberlites (pipe Udachnaya) was studied. Crystal structure of clinopyroxene from spinel peridotite was refined. Trace population of H+ position was found. It is in accord with IR data about ¯ and 2 presence in NAM structures. Both species of structurally bonded water (¯, 2) and carbon in the peridotite minerals are retained within a temperature and pressure range of 9001500C and of 1557 kbar respectively and at an oxygen fugacity Δ(lgfO2) FMQ varying from 3.31 to 0.16. The total content of water in the xenoliths increases with increasing T and P and decreases with Δ(lgfO2) FMQ increasing in peridotites studied. The content of 2 in studied peridotite xenoliths decreases with peridotite melting degree increasing.
Water, carbon, xenoliths
 
Date of presentation:  09/10/2012
Presentation Place:  Mining University, Conference Hall
 
RMS-DPI code:  2012-1-27-0
Proceeedings volume 
in the RMS catalogue:
 
Mineralogy in whole space of the word.
File of proceedings 
(PDF): 
 222 K
Status:  printed
Accepted:  28/08/2012
Published on-line:  28/10/2012
Permanent address of publication:  http://www.minsoc.ru/2012-1-27-0/
Contact author(s):  Babushkina, Miryam Samuilovna

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