The Maogongdong deposit is located in the giant Dahutang W-Cu-(Mo) ore field, northern Jiangxi Province, South China. It is mainly a vein-type deposit, characterized by early W and late Cu-Mo mineralization, and temporally and spatially associated with Late Mesozoic S-type muscovite granites emplaced into a Neoproterozoic granodiorite batholith and the Shuangqiaoshan Group metasedimentary rocks. Fluid inclusions and H–O isotopes suggest that the early ore-forming fluids of the Maogongdong deposit are mainly magmatic water with relatively high temperature (270–410 °C) and moderate-to-low salinity, while the late ore-forming fluids are mixed with meteoric water, with medium-to-low temperature (160–270 °C) and low salinity. Infrared and conventional microthermometric studies of fluid inclusions of the main tungsten mineralization stage show that the homogenization temperatures of primary fluid inclusion assemblages in wolframite (325 to 355 °C) are about 20 °C higher than those of coexisting scheelite and generally 40 °C higher than those in quartz. The δ³⁴S values of sulfides (− 5.2 to − 1.3 ‰) in the sulfide stage are slightly lower than the magmatic sulfur (− 1.7 to 0.6 ‰) in the pre-ore stage, most likely due to an increase in oxygen fugacity. The low carbon isotope values (− 26.2 to − 15.5 ‰) of fluid inclusions in the tungsten mineralization stage show that a large amount of organic carbon was added before mineralization. Fluid cooling and pressure decrease are the main factors of tungsten ore precipitation, while local boiling may also make a contribution. Mixing of the different fluids led to the formation of copper and molybdenum ores.

毛公东矿床位于华南江西省北部的大湖塘钨铜（钼）矿田。主要为脉型矿床，以早W、晚Cu-Mo成矿为特征，时空上与晚中生代S型白云母花岗岩就位到新元古代花岗闪长岩基岩和双桥山群变沉积岩中有关。流体包裹体和H-O同位素表明，毛公洞矿床早期成矿流体主要为温度较高（270～410 ℃）、中低盐度的岩浆水，晚期成矿流体为与大气水混合，具有中低温（160-270°C）和低盐度。对主要钨矿化阶段流体包裹体的红外和常规显微温度研究表明，黑钨矿中原生流体包裹体组合的均质化温度（325～355℃）比共存的白钨矿高约20℃，一般高出40℃。比石英中的那些。δ^{硫化物阶段硫化物的34} S 值（- 5.2 至 - 1.3 ‰）略低于前成矿阶段的岩浆硫（- 1.7 至 0.6 ‰），很可能是由于氧逸度增加。钨矿化阶段流体包裹体的低碳同位素值（-26.2～-15.5‰）表明，在成矿前加入了大量的有机碳。流体冷却和压力降低是钨矿沉淀的主要因素，而局部沸腾也可能有贡献。不同流体的混合导致形成铜和钼矿石。