Mineralogical and geological characteristics of the Nui Phao tungsten deposit and its resource in the Dai Tu area, northeastern Vietnam

Typically, granitic intrusions that document the lengthy and intricate history of magmatic-hydrothermal system are linked to tungsten deposits. Uncertainty persists about genetic relationship between mineralization development. The primary deposit in Dai Tu region, known as Nui Phao deposit, has been subject a petrographical microscopic examination. Tungsten area often occurs association with formation skarn greisen bodies, it drawn much attention from geoscientists. Based on observations, ores can be divided into three stages, namely skarnisation, greisenization, hydrothermal stage. To examine geochemical features ores, SEM-EDS Microscope analytical methods were performed this study. Research results indicate was formed due different tectonic magmatism episodes. Accordingly, is relatively complicated multi-sources ore components. Most accumulated metasomatism Ordovician-Silurian carbonate-terrigenous sedimentary rocks Phu Ngu Cretaceous two-mica granite Pia Oac complex. research resources obtained at levels 122 333 227.6 thousand tons. Moreover, alteration study influenced by least metasomatic episodes, including greisenisation, late medium low temperature genetically related fluorite-polymetallic mineralization.