Geochemistry of radioactive elements in the rocks of the Guli Massif, Polar Siberia
作者： L. N. Kogarko
DOI: 10.1134/S0016702912090042
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摘要: The study of radioactive element distribution in the rocks Guli Complex revealed an increase uranium and thorium contents final products magmatic differentiation. In carbonatite complex, elements are mainly accumulated early rocks—phoscorites, while their late phases, dolomitic carbonatites, decrease. Th/U ratio increases from near-chondritic values weakly differentiated highly-magnesian primary magmas to calcitic carbonatites. majority hosted rare-metal accessory minerals: perovskite, pyrochlore, calzirtite, apatite. Rock-forming minerals characterized by extremely low elements.
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