Shiwei Song

• PhD
• China University of Geosciences (Beijing)

The Tieshanlong ore field is an important part of the Nanling Range, which is famous worldwide for its W‐Sn mineralization. Notably, the mineralization age of the Tieshanlong ore field is not well constrained, and our field investigation reveals that granitic emplacement occurred at different stages. However, previous studies have not distinguished...

Tin (Sn) and tungsten (W) behave incompatibly in reduced magmatic systems and may become enriched in late highly-evolved melts. Nonetheless, Sn and W rarely concentrate in the same deposit. In deposits formed by Sn- and W-bearing granites, this separation may be due to the contrasting behavior of Sn and W during exsolution of a magmatic fluid or th...

Gold precipitation in hydrothermal systems is traditionally attributed to supersaturation of gold due to decreasing gold complex stability triggered by changes in physicochemical conditions of the ore fluid. However, ultrahigh-grade gold veins in orogenic (shear zone related) gold deposits can contain kilograms per tonne of gold or more, in marked...

We present in situ LA-ICP-MS U-Pb dating of xenotime and monazite in assemblages with native gold and Au (Ag) tellurides from the Xiaoqinling lode gold district in central China. Composite xenotime and monazite grains formed through coupled dissolution-reprecipitation reactions reveal two discrete gold mineralization events. The first gold minerali...

Although previous studies consistently revealed that the world’s largest W deposit, Zhuxi (3.44 Mt. WO3 @0.54 %) was formed by a single metallogenic stage in the Late Jurassic (∼150 Ma), this contribution identifies an unrecognized, postdate metallogenic event. After detailed field investigation, we noted that the early disseminated scheelite-beari...

The Yangchuling porphyry W–Mo deposit is an oxidized tungsten deposit in the Jiangnan tungsten belt, which is the largest tungsten belt in the world. Both W- and Mo-mineralization predominantly occur in the cupola of a monzogranite porphyry with abundant mafic dikes and microgranular mafic enclaves (MMEs). Acicular apatite in MMEs and similar SIMS...

The Zhuxi deposit (3.44 Mt. WO3 @0.54%) is the largest tungsten deposit in the world. Although ore-related granitic magmas are correlated with the partial melting of fertile supracrustal material, the heat source triggering the partial melting of fertile supracrustal material has been poorly constrained. To unravel the petrogenesis of the granites,...

The Zhuxi deposit, with 3.44 million tons (Mt) WO3 at 0.54%, is a world-class reduced scheelite skarn deposit and is spatially associated with highly fractionated and highly mineralized dikes, i.e., scheelite-bearing anorthite rock and albitite dikes. These scheelite-bearing dikes share similar rare earth element (REE) and Sr–Nd isotope composition...

Tungsten and Sn display similar behavior during magmatic processes and are commonly associated spatially and genetically with highly evolved granites. Nonetheless, they typically form separate deposits, even if their associated granites have the same protolith. This separation may be due to the fractionation of the metals at the magmatic-hydrotherm...

The southern margin of the North China craton hosts a number of quartz vein-style deposits of the unusual Au-Mo ore spectrum, including the Dahu deposit in the Xiaoqinling region. Pristine euhedral monazite and rutile crystals from the Dahu Au-Mo mineralized veins yield LA-ICP-MS weighted mean ²⁰⁶Pb/²³⁸U ages of 212.1 ± 1.7 Ma (1s, MSWD = 1.13) and...

The ore-related Sn granites in the Youjiang basin (YJB; ~ 4.0 Mt Sn) and W granites in the Jiangnan tungsten belt (JNB; ~ 6.0 Mt WO3) in south China were studied to decipher regional-scale controls on whether Sn or W is most likely to be associated with highly fractionated reduced granitic magmas. Both Sn and W mineralization-related magmas were de...

Subduction of oceanic plates beneath continental lithosphere is critical for understanding tectonic evolution and evaluation of prospecting and exploration. Within the Yidun Terrane (YDT) of southwestern China, a number of Mesozoic to Cenozoic granitoid intrusions are exposed and they are useful for investigating the tectonic evolution of the Paleo...

Low-temperature polymetallic melts can scavenge gold from aqueous fluids and may be instrumental in the formation of some hydrothermal lode gold deposits. However, this process is yet to be fully appreciated, because of the difficulty in recognizing textural evidence for preexisting melts and a lack of awareness that metallic melts can persist in h...

The 500 km-long NE-trending Jiangnan tungsten belt formed at 140-150 Ma at the northern margin of the Yangtze craton and has a total resource of approximately 6.0 Mt WO3. Most deposits are of granite-related porphyry/vein-style and skarn type. The three large W systems at Zhuxi, Shimensi and Shiweidong in the southwestern part of the belt are the m...

South China is characterized by intensive, large-scale Mesozoic metal mineralization. The mechanism of ore formation during the Yanshanian period has been well studied. Recently, plentiful Triassic deposits have been discovered or recognized in South China, however, few studies are focused on their regional distribution pattern and ore deposit mode...

Due to the obvious differences in geochemical behavior for tungsten and copper in magmatic systems, it is usually difficult to occurring large-scale Cu- A nd W-mineralization at the same time. However, tungsten (copper) deposits represented by Shimensi and Zhuxi deposits appear in the Jiangnan tungsten belt. This study focuses on the most important...

Scheelite-bearing albitite is present in the form of rare, highly fractionated felsic dikes in the world-class Zhuxi tungsten deposit. Morphologically, the Zhuxi albitite forms individual dikes with thicknesses from 0.01 to 5.1 m in the orebodies. Additionally, the Zhuxi albitite is characterized by high sodium concentrations (Na2O = 6.08–8.04 wt %...

The Zhuxi W (Cu) skarn deposit is the largest W deposit in the Jiangnan porphyry–skarn tungsten belt in South China, and is also among the largest deposit of this type in the world. Titanite is a common mineral in the Zhuxi deposit, and occurs in three textural settings: titanite I associated with retrograde-altered exoskarn with weak mineralizatio...

Tungsten and Sn deposits in China are widely distributed in the South China block (i.e., Yangtze craton-Cathaysian block), Himalaya, Tibetan, Sanjiang, Kunlun, Qilian, Qinling, Dabie, and Sulu orogens, and Central Asian orogenic belt. Among these, the South China block hosts the majority of the mineralization with about 73% (9.943 million tonnes WO...

Tungsten deposits are commonly related to intermediate-acid intrusions. Identifying the ore-related intrusions is a challenge in mineral exploration, because complex rock bodies commonly appear in tungsten mines, but tungsten mineralization is commonly related to special magmatic activity. The Zhuxi W deposit, which is a world-class deposit, is loc...

A quartz-free scheelite-bearing fine- to medium-grained anorthosite occurs as a dike in the world-class Zhuxi scheelite skarn deposit of South China. The anorthosite mainly comprises An-rich plagioclase (Anavg = 91, ~90 vol%) + scheelite (~3 vol%) + apatite (~2.5 vol%) + ilmenite (~1.5 vol%) + titanite (~1 vol%), as well as minor (~2 vol%) fluorite...

The Zhuxi W-Cu deposit, located in the Jiangnan porphyry-skarn W belt, is a world-class W deposit. We studied three coeval mineralization-related intrusions composed of biotite monzogranite, fine-grained granite, and granite porphyry in the Zhuxi mine. These rocks contain peritectic garnet and K-feldspar. The LA-ICP-MS U–Pb dating of zircon from th...

The Yangchuling W–Mo deposit, located in the Jiangnan porphyry–skarn (JNB) tungsten ore belt, is the first recognized typical porphyry W–Mo deposit in China in the 1980's. Stockworks and disseminated W–Mo mineralization occur in the roof pendant of a 0.3 km² monzogranitic porphyry stock that intruded into a granodiorite stock, hosted by Neoproteroz...