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Content Provider | Springer Nature Link |
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Author | Cabral, Alexandre Raphael Rios, Francisco Javier Oliveira, Lucilia Aparecida Ramos Abreu, Francisco Robério Lehmann, Bernd Zack, Thomas Laufek, František |
Copyright Year | 2014 |
Abstract | The Zr-in-rutile thermometer is well established for the determination of metamorphic temperatures, particularly in high-grade metamorphic terrains, and for sedimentary provenance studies. The robustness of the rutile thermometry has not been tested on hydrothermal systems. Unlike quartz, a common hydrothermal mineral with abundant fluid inclusions, it is difficult to find fluid inclusions in rutile that are suitable for fluid-inclusion microthermometry. Here, we report fluid-inclusion microthermometric measurements in rutile from the auriferous quartz–kaolinite–hematite vein that typifies the gold deposit of Mil Oitavas in the southern Serra do Espinhaço, Minas Gerais, Brazil. Primary fluid inclusions in the rutile record moderately saline (10–12 wt% NaCl equivalent), aqueous–carbonic fluids with a total homogenization temperature of ~250 °C, which were likely trapped at about 300 °C and 2.0 kbar. This temperature is approximately 200 °C lower than that predicted by the Zr-in-rutile thermometer. For hydrothermal conditions of relatively low temperature, direct measurements of homogenization temperatures in rutile-hosted fluid inclusions should be preferred to the Zr-in-rutile thermometer. |
Starting Page | 513 |
Ending Page | 519 |
Page Count | 7 |
File Format | |
ISSN | 14373254 |
Journal | International Journal of Earth Sciences |
Volume Number | 104 |
Issue Number | 2 |
e-ISSN | 14373262 |
Language | English |
Publisher | Springer Berlin Heidelberg |
Publisher Date | 2014-12-27 |
Publisher Place | Berlin, Heidelberg |
Access Restriction | One Nation One Subscription (ONOS) |
Subject Keyword | Hydrothermal rutile Fluid-inclusion microthermometry Zr-in-rutile thermometer Mil Oitavas gold deposit Diamantina Minas Gerais Geology Geophysics/Geodesy |
Content Type | Text |
Resource Type | Article |
Subject | Earth and Planetary Sciences |
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