Age and genesis of the W-Bi-Cu-F (Au) Nui Phao deposit, Northeast Vietnam: Constrains from U-Pb and Ar-Ar geochronology, fluid inclusions study, S-O isotope systematic and scheelite geochemistry

Northeast Vietnam comprises several tectonic units, which host number of metallic deposits of different types from orogenic gold to intrusion hosted PGE deposits. The Lo Gam domain being part of the NE Vietnam, hosts the Lang Vai gold district, a several Pb–Zn deposits, and the recently discovered super-large W-Bi-Cu-F (Au) Nui Phao deposit. The Nui Phao deposit is 87.9 Mt at 0.19% WO3, 7.95% CaF2, 0.18% Cu, 0.19 g/t Au, and 0.09% Bi, while the...