The Nanling Metallogenic Belt (NMB) in South China contains huge amounts of Middle to Late Jurassic granitoid-related polymetallic Pb-Zn and W-Sn deposits. Whether there is a link between granitoid genesis and mineral species and what specific factors control the metallogenic specialization remained unclear. Herein, we presented a systematic investigation on the Dafang Pb-Zn ore-causative intrusion, and then placed it into the compiled comprehensive dataset of the NMB ore-hosting granitoids aiming to reveal the magmatic control on the Pb-Zn and W-Sn metallogenic variations in South China. Our results illustrate that the Dafang granitoid is potassic, alkaline (Na₂O + K₂O: 5.84 % to 7.87 wt%) and meta-luminous (A/CNK: 0.75 to 1.01), with middle SiO₂ content (60.59–65.15 wt%), displaying an analogous nature of I-type granitoids. Trace elements of all samples are characterized by a significant enrichment in LREEs, Pb, and K, and a strong depletion of HREEs, HFSEs as well as Ba. Further zircon U-Pb dating yields a concordant age of 157.0 ± 0.8 Ma (MSWD = 1.1), consisting with the Jurassic magmatic-hydrothermal activities in the NMB. Their negative ε_Hf(t) values (−6.7 to −10.2) and two-stage Hf model ages (1.6 to 1.7 Ga) suggest that the Dafang granitoid intrusion was generated from the partial melting of a Paleoproterozoic middle-lower crust. By comparing the Dafang with other NMB ore-causative granitoids in the comprehensive dataset, we investigated two types of ore-causative granitoids, i.e., the Pb-Zn- and W-Sn-mineralized granitoids, with distinct magmatic source, redox state and evolution degree. The Pb-Zn-bearing granitoids predominantly generated from amphibolite with a high oxygen fugacity (Ce⁴⁺/Ce³⁺: average 104.8, n = 55) and low differentiation degree (Rb/Sr: average 0.8, n = 60; Nb/Ta: average 12.5, n = 62). In contrast, the W-Sn metallogenic granitoids originated from metasedimentary rocks with a relatively lower oxygen fugacity (Ce⁴⁺/Ce³⁺: average 46.7, n = 258) and higher differentiation degree (Rb/Sr: average 59.0, n = 139; Nb/Ta: average 5.3, n = 156). Collectively, we conclude the Pb-Zn and W-Sn metallogenic variations in the NMB (South China) are jointly determined by magmatic sources, oxygen fugacity and differentiation degree.

华南南岭成矿带（NMB）蕴藏着大量中晚侏罗世花岗岩相关的铅锌、钨锡多金属矿床。花岗岩成因和矿物种类之间是否存在联系以及控制成矿专业化的具体因素仍不清楚。本文对大方铅锌矿成矿侵入岩进行了系统研究，并将其纳入编制的NMB含矿花岗岩综合数据集中，旨在揭示岩浆对铅锌、钨锡成矿的控制作用。华南地区的差异。我们的结果表明，大方花岗岩呈钾质、碱性（Na ₂ O + K ₂ O：5.84 %至7.87 wt%）和偏发光（A/CNK：0.75至1.01），其中SiO _{2含量中等}含量（60.59-65.15 wt%），表现出与 I 型花岗岩类似的性质。所有样品的微量元素的特征是轻稀土、铅和钾显着富集，而重稀土、高频SE 和Ba 严重贫化。进一步的锆石 U-Pb 测年得出一致的年龄为 157.0 ± 0.8 Ma (MSWD = 1.1)，与 NMB 中的侏罗纪岩浆热液活动一致。它们的负 ε _Hf(t)值(-6.7至-10.2)和两阶段Hf模型年龄(1.6至1.7 Ga)表明大方花岗岩侵入体是由古元古代中下地壳部分熔融生成的。通过将大方与综合数据集中其他NMB成矿花岗岩进行比较，我们研究了两类具有不同岩浆来源、氧化还原状态和演化的成矿花岗岩，即铅锌矿化花岗岩和钨锡矿化花岗岩。程度。含铅锌花岗岩主要由具有高氧逸度（Ce ⁴⁺ /Ce ³⁺：平均 104.8，n = 55），分化程度低（Rb/Sr：平均 0.8，n = 60；Nb/Ta：平均 12.5，n = 62）。相比之下，W-Sn成矿花岗岩起源于变沉积岩，其氧逸度相对较低（Ce ⁴⁺ /Ce ³⁺：平均46.7，n = 258）和较高的分异程度（Rb/Sr：平均59.0，n = 139） ；Nb/Ta：平均 5.3，n = 156)。综上，我们得出NMB（华南）Pb-Zn和W-Sn成矿变化是由岩浆来源、氧逸度和分异程度共同决定的。