Abstract
Oxygen isotope fractionation was experimentally studied in the quartz-wolframite-water system from 200 to 420 °C. The starting wolframite was synthesized in aqueous solutions of Na2WO4 · 2H2O + FeCl2 · 4H2O or MnCl2 · 4H2O. The starting solutions range in salinity from 0 to 10 equivalent wt.% NaCl. Experiments were conducted in a gold-lined stainless steel autoclave, with filling degrees of about 50%. The results showed no significant difference in equilibrium isotope fractionation between water and wolframite, ferberite and huebnerite at the same temperature (310 °C ). The equilibrium oxygen isotope fractionation factors of wolframite and water tend to be equal with increasing temperature above 370 °C, but to increase significantly with decreasing temperature below 370 °C: 1000 ln αwf-H2o= 1.03×106T−2-4.91 (370 °C ±200 °C ) 1000 ln αwf-H2o = 0.21×106T −2-2.91 (420 °C -370 °C ±)
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References
Borshevsky, Yu. A., 1979, Isotopic composition of Rudopoga scheelite in tungsten ore deposits of various types: Geology of Ore Deposits, n.1, p.62–72 (in Russian).
Clayton, R.N., J. R. O. Neil, and T.K. Mayeda, 1972, Oxygen isotope exchange between quartz and water: Jour. Geophys. Research, v. 77, p. 3057–3067.
Ding Tiping et al., 1988, Studies of stable isotopes from selected deposits typical of the Nanling Region: Beijing, Science and Technology Press, p. 1–71 (in Chinese).
Landis, G. P. and R. O. Rye, 1974, Geologic, fluid inclusion and stable isotope studies of the Pasto Beuno tungsten base metal ore deposit, Northern Peru: Econ. Geol., v. 69, p. 1025–1085.
Matthews, A. and R.D. Beckinsale, 1979, Oxygen isotope equilibration systematics between quartz and water: Am. Mineral., v. 69, p. 232–240.
O’Neil, J.R., 1986, Theoretical and experimental aspects of isotopic fractionation, in Stable Isotopes in High Temperature Geological Process: Review in Mineralogy, v. 16, p. 1–37.
Zhang Ligang, Zhuang Longchi, Qian Yaqian, Guo Yingshaun, and Qu Ping, 1982, Stable isotope geochemistry of granites and tungsten-tin deposits in the Xihuashan-Piaotang area, Jiangxi Province, China.: ESCAP/RMRDC, Bandung, Indonesia and Geological Publishing House, Beijing, China, p. 553–566.
Zhang Ligang, 1988, Oxygen isotope characteristics of wolframite in tungsten deposits, southern China: Chinese Journal of Geochemistry, v. 3, p. 233–242.
Zhang Ligang, Liu Jinxiu, Zhou Huanbo, and Chen Zhensheng, 1989, Oxygen isotope fractionation in the quartz-water-salt system: Econ. Geol., v. 89, p. 1643–1650.
Zhang Ligang, Liu Jinxiu, Zhou Huanbo, and Chen Zhensheng, 1990, Experimental study on isotopic fractionation in the quartz-cassiterite-water system: Geology and Prospecting, v. 5, p. 31–37 (in Chinese).
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This projects was financially supported by the National Natural Science Foundation of China.
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Ligang, Z., Jingxiu, L., Huanbo, Z. et al. An experimental study of oxygen isotope fractionation in the quartz-wolframite-water system. Chin. J. of Geochem. 12, 220–227 (1993). https://doi.org/10.1007/BF02843361
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DOI: https://doi.org/10.1007/BF02843361