%0 Journal Article %T Sm-Nd System of Rare-Metal Pegmatites of the World-Class Kolmozero Lithium Deposit and Shongui Beryllium Deposit, NW Russia: Geochemical Causes of Disturbance and Nd Mobility %A Serov, P.A. %A Morozova, L.N. %K Kolmozero lithium deposit, Shongui beryllium deposit, rare-metal pegmatites, LCT-type, spodumene, beryl, Sm-Nd age, REE %J Russian Journal of Earth Sciences %D 2025 %N 25 %P 11 %I Geophysical Center of the Russian Academy of Sciences