The fractionation of nickel between olivine and augite as a geothermometer |
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| Affiliation: | 1. Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada M5G 1L6;2. Center for Structural Genomics of Infectious Diseases (CSGID);3. M. G. DeGroote Institute for Infectious Disease Research, McMaster University, MDCL 2301, 1280 Main Street West, Hamilton, Ontario, Canada L8N 3Z5;4. Unité des Agents Antibacteriens, Institut Pasteur, 25, rue du Dr Roux, 75724 Paris Cedex 15, France;1. Anhui University of Technology, Maanshan, Anhui 243000, China;2. Tongji University, Shanghai 200092, China;1. Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China;2. Institute of Geological Survey, China University of Geosciences, Wuhan 430074,China;3. State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China |
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| Abstract: | The coexisting olivine, clinopyroxene and glass of five samples collected from the Makaopuhi lava lake in Hawaii, at temperatures ranging from 1050 to 1160°C were analysed for nickel with an electron probe microanalyser. The results strongly suggest that the distribution of nickel between these three phase pairs well obeys the thermodynamic partition law, and that under favourable conditions, the distribution coefficients permit the estimation of the crystallisation temperature within an accuracy of 10–20°C.It is concluded that the application of the Makaopuhi data to plutonic and to other volcanic rocks should be carried out with caution because the effect of pressure and the changing composition of the phases upon the numerical values of the distribution coefficients is not known quantitatively. |
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