INDEPENDENT NIOBIUM AND TANTALUM MINERALS DISCOVERED IN SAIMA DEPOSIT, EASTERN LIAONING
LI Jin-xuan1, WU Yue2, JU Nan2, LIU Xin2, SHI Lu2
1. Mudanjiang Natural Resources Comprehensive Survey Center, CGS, Mudanjiang 157000, Heilongjiang Province, China; 2. Shenyang Center of China Geological Survey, Shenyang 110034, China
Abstract：Through scanning electron microscopy and electron probe, independent niobium-tantalum minerals, mainly loparite, betafite and fersmite, are identified from the Saima Nb-Ta deposit in eastern Liaoning Province for the first time. The discovery solves the controversy about the existence of independent niobium-tantalum minerals in the area. According to the results of Sr-Nd-Pd isotope analysis, it is inferred that the mineralization of the niobium-tantalum deposit is related to mantle enrichment, with mixture of some crustal materials.
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