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XI RMS General Meeting and the Fedorov Session 2010
Saint Petersburg, Russia
11-14 October 2010
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Conferences & Meetings XI RMS General Meeting “Modern mineralogy: from theory to practice” combined with the Fedorov Session 2010
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Features of spinifex structures in melt inclusions from the Victoria komatiitic lava lake (Vetreny Poyas paleoproterozoic paleorift)

RMS-DPI code:  2010-1-156-0
Scientific session:  F1. Real structure of minerals and rocks: Insight in formation processes.
Author listing:  Kulikov V.S., Bychkova Ya.V., Kulikova V.V.
Principal author:  Kulikov Vyacheslav S.
Language:  Russian
Abstract - Summary 
(short description):
Our previous researches have shown features of an internal structure of olivine and chromite, selected from komatiitic lava covers. It has been shown that for these minerals melt inclusions are rather characteristic. Inclusions in olivine are presented by various forms both isometric, extended and vacuole like with diameter to 60 mkm and length to 700 mkm. They are combined by glassy mezostasis, and replaced by chloritic or serpentinitic unit and needle augite crystals.
Minerals and mezostasis of olivine inclusions have been studied. 2 groups are allocated: extended «flasks» with fine grained melt, and also roundish «drops» of larger size where augite crystals carry change signs. The special structure of «flasks» is caused by a finding of grains “nanochromite” in one of their ends that can be connected with their position concerning the cover basis. On the basis of the received measurements of a chemical composition of inclusions parent (?) melts corresponds to low magnesia komatiitic basalts.

 
Date of presentation:  13/10/2010
Time of presentation:  17:00
Presentation Place:  Mining University, Hall 1164
 
RMS-DPI code:  2010-1-156-0
Proceeedings volume 
in the RMS catalogue:
 
Modern mineralogy: from theory to practice
Pages:  41-43
File of proceedings 
(PDF): 
 976 K
Status:  printed
Recieved:  15/06/2010
Accepted:  15/07/2010
Published on-line:  21/11/2010
Permanent address of publication:  http://www.minsoc.ru/2010-1-156-0/
Contact author(s):  Kulikova, Victoria Vladimirovna
 

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