Application of geophysical methods in the exploration of Nb-Ta deposit in No.782 Highland,northern Daxinganling Mountains

The No. 782 Highland Nb-Ta deposit in Mohe City is the only medium-scale rare metal deposit discovered in Heilongjiang Province in recent years. The deposit is associated with rare earth elements(Y-rich),Zr,U,and other components,and thus has significant potential value. This deposit was found through the verification of airborne radiometric anomalies by ground gamma-ray spectrometry. The ground gamma-ray spectrometry anomalies correspond well with the ore-forming geological bodies,demonstrating the effectiveness of geophysical methods in exploring this deposit type. Gamma-ray logging curves play a significant role in the correlation and connection of ore bodies and can effectively guide field sampling. Radiometric surveys and gamma-ray logging are therefore of great significance for the prospecting of such deposits.