Tungsten deposits facilitate oxidation of the NiAl(110) surface

2019 ◽  
Vol 150 (12) ◽  
pp. 124701
Author(s):  
Thomas Meyer ◽  
Niklas Nilius
Keyword(s):  
Tungsten Deposits

scholarly journals Petrogeochemical and isotopic characteristics, connection with magmatism of tungsten deposits of Aginskaya and Argunskaya structural-formation zones of the Eastern Transbaikalia

LITOSFERA ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 262-272
Author(s):  
B. N. Abramov ◽  
V. F. Posokhov
Keyword(s):  
Oxygen Isotope ◽  
Inductively Coupled Plasma ◽  
Isotope Composition ◽  
Close Correlation ◽  
Infrared Region ◽  
Emission Analysis ◽  
Structural Formation ◽  
Geological Institute ◽  
Eastern Transbaikalia ◽  
Tungsten Deposits

Research subject. Tungsten deposits of the Aginsky and Argunsky structural-formation zones in the Eastern Transbaikalia. The aim was to clarify the sources and conditions for the formation of tungsten mineralisation, as well as to clarify a relationship between magmatism and tungsten mineralisation. The conditions of deposit formation were studied using data on the chemical composition of rocks and ores and the oxygen isotopic composition of the ore veins of tungsten deposits.Methods. The elemental composition of rocks was determined by the methods of X-ray fluorescence and standard chemical analysis; the concentration of rare-earth elements was determined by sorption-atomic emission analysis with inductively coupled plasma (Geological Institute SB RAS, Ulan-Ude). The examination of oxygen isotope composition was carried out at the Geological Institute of SB RAS (Ulan-Ude) using a MIR 10-30 system of laser heating with a 100W CO2 laser and 10.6 microns wavelength in the infrared region in the presence of a BrF5 reagent (analyst V.F. Posokhov).Results and conclusions. It was established that granites in the Kukulbey complex of the Antonovogorsky and Bukukinsky tungsten deposits correspond to granites of an ilmenite series, while the ores in the Spokoininsky deposit are associated with the granites of a magnetite series. A close correlation was established between W with Ta, Nb, Hf and As, indicating similar compositions of ore-bearing sources of the tungsten deposits. For Barun-Shiveinsky, Antonovogorsky and Bukukinsky deposits, the oxygen isotope compositions in the fluid in equilibrium with quartz of the productive stage was calculated, indicating the magmatic sources of mineralisation.

scholarly journals Trace element composition of scheelite as an exploration tool for gold and tungsten deposits

2021 ◽  
Author(s):  
Ana Carolina Miranda ◽  
Georges Beaudoin ◽  
Bertrand Rottier ◽  
Jan Pasava ◽  
Jan Malec ◽  
...  
Keyword(s):  
Trace Element ◽  
Trace Element Composition ◽  
Element Composition ◽  
Exploration Tool ◽  
Tungsten Deposits ◽  
And Tungsten
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