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The Dongfengnanshan Cu polymetallic deposit is one representative deposit of the Tianbaoshan ore district in the Yanbian area, northeast (NE) China. There occur two types of ore bodies in this deposit, the stratiform ore bodies and vein‐type ones, controlled by the Early Permian strata and the Late Hercynian diorite intrusion, respectively. Due to the ambiguous genetic type of the stratiform ore bodies, there has been controversy on the relationship between them and vein‐type ore bodies. To determine the genetic type of stratiform ore bodies, laser ablation inductively coupled plasma mass spectrometry (LA‐ICP‐MS) in situ trace elements and S–Pb isotope analysis have been carried on the sulfides in the stratiform ore bodies. Compared with that in skarn, Mississippi Valley‐type (MVT), and epithermal deposits, sphalerite samples in the stratiform ore bodies of the Dongfengnanshan deposit are significantly enriched in Fe, Mn, and In, while depleted in Ga, Ge, and Cd, which is similar to the sphalerite in volcanic‐associated massive sulfide (VMS) deposits. Co/Ni ratio of pyrrhotites in the stratiform ore bodies is similar to that in VMS‐type deposits. The concentrations of Zn and Cd of chalcopyrites are similar to those of recrystallized VMS‐type deposits. These characteristics also reflect the intermediate ore‐forming temperature of the stratiform ore bodies in this deposit. Sulfur isotope compositions of sulfides are similar to those of VMS‐type deposits, reflecting that sulfur originated from the Permian Miaoling Formation. Lead isotope compositions indicate mixed‐source for lead. Moreover, the comparison of the Dongfengnanshan stratiform ore bodies with some VMS‐type deposits in China and abroad, on the trace elements and S–Pb isotope characteristics of the sulfides reveals that the stratiform ore bodies of the Dongfengnanshan deposit belong to the VMS‐type, and have closely genetic relationship with the early Permian marine volcanic sedimentary rocks.

The giant Pulang porphyry Cu (–Mo–Au) deposit in Northwestern Yunnan Province, China, is located in the southern part of the Triassic Yidun Arc. The Cu orebodies are mainly hosted in quartz monzonite porphyry (QMP) intruding quartz diorite porphyry (QDP) and cut by granodiorite porphyry (GP). New LA-ICP-MS zircon U–Pb ages indicate that QDP (227 ± 2 Ma), QMP (218 ± 1 Ma, 219 ± 1 Ma), and GP (209 ± 1 Ma) are significantly different in age; however, the molybdenite Re–Os isochron age (218 ± 2 Ma) indicates a close temporal and genetic relationship between Cu mineralization and QMP. Pulang porphyry intrusions are enriched in light rare-earth elements (LREEs) and large ion lithophile elements (LILEs), and depleted in heavy rare-earth elements (HREEs) and high field-strength elements (HFSEs), with moderately negative Eu anomalies. They are high in SiO2, Al2O3, Sr, Na2O/K2O, Mg#, and Sr/Y, but low in Y, and Yb, suggesting a geochemical affinity to high-silica (HSA) adakitic rocks. These features are used to infer that the Pulang HSA porphyry intrusions were derived from the partial melting of a basaltic oceanic-slab. These magmas reacted with peridotite during their ascent through the mantle wedge. This is interpreted to indicate that the Pulang Cu deposit and associated magmatism can be linked to the synchronous westward subduction of the Ganzi–Litang oceanic lithosphere, which has been established as Late Triassic.

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Recent studies have revealed that there are many largescale silver deposits in NE China and eastern Inner Mongolia. Silver mineralization in most of these deposits are associated with Pb-Zn deposits, such as the Xiaoxilin (Heilongjiang Province), Tianbaoshan (Jilin Province), Jiawula and Chaganbulagen (eastern Inner Mongolia) deposits. The Shanmen deposit is situated 15 km southeast of Siping City, Jilin Province, has an Ag resource of 1750 t (average grade of 189.35 g/t) and paragenetic Au reserve resources of 9.9 t (average grade of 1.24 g/t). As one of the few large-scale silver-dominated deposits, the Shanmen deposit has important significance for regional metallogeny and ore-prospecting in NE China.Data has been reported for the Shanmen deposit since the 1980s, including its geological setting, deposit geology, metallogenic intrusions, ore-forming fluids and ore genesis. For example, according to the characteristics of fluid inclusions and C-H-O-S-Pb isotopes, Feng et al. (2010) and Wang (2012) classified the Shanmen deposit as an epithermal deposit, whereas Tian and Shao (1991), Sun et al. (2019) and Cao (2020) considered it to be a medium-low temperature magmatic hydrothermal type. Regarding petrogenesis, only Wang (1992) reported that