The U–Pb System in Schorlomite from Calcite–Amphobole–Pyroxene Pegmatite of the Afrikanda Complex (Kola Peninsula)

The geochronological U–Pb study of shorlomite from igneous rocks of the alkali–ultramafic Afrikanda massif (Kola Peninsula) was performed. The results demonstrate the reliability of calcium garnet as a mineral for the U–Pb geochronology of a wide range of igneous rocks, i.e., carbonatite, syenite, f...

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Bibliographic Details
Published in:Doklady earth sciences 2018-02, Vol.478 (2), p.148-151
Main Authors: Salnikova, E. B., Stifeeva, M. V., Chakhmouradian, A. R., Glebovitsky, V. A., Reguir, E. P.
Format: Article
Language:English
Subjects:
Calcite
Calcite crystals
Calcium
Carbonates
Earth
Earth and Environmental Science
Earth Sciences
Garnet
Geochronology
Geochronometry
Geological time
Geology
Igneous rocks
Isotopes
Kimberlites
Lead
Magmatism
Mineralization
Ore deposits
Pegmatite
Pyroxenes
Rare earth elements
Rare earth metals
Rock
Syenite
Trace elements
Uranium
Zirconium
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Summary:The geochronological U–Pb study of shorlomite from igneous rocks of the alkali–ultramafic Afrikanda massif (Kola Peninsula) was performed. The results demonstrate the reliability of calcium garnet as a mineral for the U–Pb geochronology of a wide range of igneous rocks, i.e., carbonatite, syenite, foidolite, foidite, melilitolite, melilitite, lamprophyres, micaceous kimberlites, etc., and associated rare earth and trace elements (REE, Nb, Zr) mineralization.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X18020083