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Mineralogy and
geochemistry of
carbonatites in Timan
(Russia)
Kovalchuk N. S.
Institute of Geology Komi SC UB RAS, Syktyvkar, Russia
kovalchuk@geo.komisc.ru
With the development of
high-tech industries the
scope and volume of consumption of
rare-earth
elements (REE)
in the world is constantly
expanding.
Hence
it is obviously necessary to develop
the resource potential of
rare-earth
elements,
including new and
poorly studied objects.
One
of potentially promising objects is the
Kosyusky
carbonatite massif
(Middle Timan),
confined to Chetlassky
complex of alkali
picrites, fenites and
carbonatites.
The detailed mineralogical and geochemical investigations of
the Kosyusky carbonatites diagnosed monazite, bastnaesite, pyrochlore;
besides the following
previously unknown
minerals and
phases were determined:
ancylite,
gatchettolite, zircon, molybdenite, anglesite, strontianite, thorite/huttonite,
carbocernaite.
The high concentration of REE of the cerium group, Sr, Ba, Th, and Nb
has been observed.
The average Σ REE content in
the Kosyusky
carbonatites
is
1.02 %.
The obtained data significantly expand understanding of geochemical and
mineralogical specificity of rare-earth mineralization of Timan
province. |