Abstract
The crystals morphology, mineral assemblages and chemical composition of aeschynite group minerals from the Vishnevye Mountains (South Urals, Russia) are presented. Some veins of syenitic pegmatites host aeschynite-(Ce) and «thoroaeschynite». The calcite-aegirine-feldspar pegmatites and quartz-arfvedsonite veins contain nioboaeschynite-(Ce) and «alumoaeschynite». Aeschynite-(Y) and nioboaeschynite-(Y) are found in annite-feldspar aggregates in assemblage with REE silicates and carbonates. The fnd of nioboaeschynite-(Y) is frst in Russia.
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