| Autor: |
Ding Tiping, Liu Zhijian, Zhang Guilan, Liu Yushan, Li Jincheng, Wan Defang |
| Rok vydání: |
2009 |
| Předmět: |
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| Zdroj: |
Acta Geologica Sinica - English Edition. 5:271-282 |
| ISSN: |
1000-9515 |
| Popis: |
Experiments for oxygen isotope exchange between ferberite and water were carried out and the following equation on oxygen isotope fractionation between ferberite and water against temperature was obtained: 10001nα FeWO4 −H2O = 1.04 × 106T −2 − 2.5 Combining this equation with the equation of Clayton et al. (1972) on oxygen isotope fractionation between quartz and water, an equation on oxygen isotope fractionation between quartz and ferberite was obtained: 10001nαSiO2 − FeWO4 = 2.34 × 106T−2 − 0.4 The Bigeleison-Mayer function method was used to calculate the oxygen isotope fractionation between quartz and ferberite. The theoretical curve obtained agrees with the experimental calibration results quite well in the temperature range of study. The above calibrated equation has been used in 5 world famous tungsten deposits to determine their temperatures of formation. The results show that the temperature range for an idividual deposit determined by this geothermometer agrees with those obtained from fluid inclusion determination and other isotope geothermometers. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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