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Metallogenic Mechanism and Tectonic Setting of Tungsten Mineralization in the Yangbishan Deposit in Northeastern China
scheelite Yangbishan iron–tungsten deposit Early Paleozoic late Pan-African period Central Asian Orogenic Belt
2018/4/10
The Yangbishan iron–tungsten deposit in the Shuangyashan area of Heilongjiang Province is located in the center of the Jiamusi Massif in northeastern China. The rare earth element and trace element co...
Lithium–strontium isotope and heavy metal content of fluid inclusions and origin of ore-forming fluid responsible for tungsten mineralization at Takatori mine, Japan
fluid inclusion lithium isotope initial 87Sr/86Sr ratio Takatori mine tungsten mineralization
2017/4/11
Ore-forming fluid trapped in vein quartz as fluid inclusions from tungsten ore at the Takatori mine was extracted by a
crush-leach technique. The trace metal content and isotopic composition (δ7Li an...
Geochronology, petrogenesis and metallogeny of Piaotang granitoids in the tungsten deposit region of South China
granitoids tungsten metallogeny U-Pb dating Hf isotope South China
2017/8/9
The tungsten deposit region of South China is well known as the world's leading tungsten (W) producer. The Piaotang tungsten deposit in the region is such a representative large-scale quartz vein type...
Discovery of non-radiogenic tungsten isotopic anomalies in the Allende CV3 chondrite
W isotopes isotope heterogeneity chondrites nucleosynthesis GCR exposure age
2017/8/10
We have measured high-precision W isotope ratios for series of carbonaceous and ordinary chondrites. The resulting 184W/183W ratios for three carbonaceous chondrites (Murchison CM2, Y-793321 CM2, and ...
介孔空心球状WC微球结构与晶相形成机理（Structure and Crystal Phase Formation Mechanisms of Hollow Global Tungsten Carbide (WC) Microsphere with Mesoporosity）
介孔 空心球状 碳化钨 微球 形成机理
2010/8/18
采用喷雾干燥微球化处理-气固反应法制备了介孔空心球状WC微球，应用扫描电子显微镜(SEM)对微球的形貌变化进行了表征。结果表明，介孔空心球状结构是逐步形成的。其中，空心球状结构形成于前驱体微球化处理过程中，介孔结构形成于空心微球还原碳化过程中。在与样品制备工艺条件相同的情况下，采用原位X射线衍射技术(in situ XRD)对样品的晶相演变规律进行了监测。结果表明，样品在CO/CO2气氛中进行还...
Evaluations of Resonance Parameters and Resonance Integral of Tungsten
linear accelerator transmissions cross-sections resonance parameters resonance integral SAMMY code
2010/4/9
I present evaluated values of resonance parameters and resonance integral for natural tungsten on the basis of experimental transmissions data obtained at the Pohang Neutron Facility (PNF), Republic o...
Potentiodynamic and potentiostatic polarizations, and a rotating disk electrode technique were used to study the influence of diffusion on the anodic reactions of tungsten (W) in a broad pH range (\si...
Anodic Behavior of Tungsten in H3PO4-K2SO4-H2SO4/KOH Solutions
Anodic Behavior Tungsten H3PO4-K2SO4-H2SO4/KOH Solutions
2010/4/22
Potentiodynamic and potentiostatic polarizations were used to study the effect of pH on the anodic reaction characteristics of tungsten (W) in a very broad pH range (0.4-13). The open circuit potentia...