Immiscible fluids (CO2-brines) in optical fluorite,Nordvik-Taimyr,Russia |
| |
| Authors: | Vsevolod Y Prokof&#x;ev Ivan A Baksheev Feodor Y Korytov Jacques Touret |
| |
| Institution: | 1. Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry (IGEM), Russian Academy of Science, Staromonetnyi per. 35, 119017 Moscow, Russia;2. Geology Department, Lomonossov Moscow State University, Leninskie Gory, 119992 Moscow, Russia;3. Musée de minéralogie, École des mines de Paris, 60, bd Saint-Michel, 75272 Paris cedex 06, France |
| |
| Abstract: | Fluid inclusion investigations in optical fluorite from the Nordvik salt dome caprock (Khatanga Gulf, Taimyr Peninsula, Russia) show that the fluorite has been formed at a temperature of about 300?°C, from CO2-brine immiscible hydrothermal fluids. Unmixing occurred at a depth of several kilometres, resulting in the liberation of dense CO2-rich fluids, which played a significant role in helping the diapir to reach its intrusive character. Compared to other optical fluorite deposits in Russia, the exceptional quality of the Nordvik occurrence is due to a relatively high formation temperature, as well as a high salinity (30–35 wt% NaCl eq.) of hydrothermal aqueous fluids. To cite this article: V.Y. Prokof'ev et al., C. R. Geoscience 338 (2006). |
| |
| Keywords: | Optical fluorite Fluid inclusions Immiscibility Taymir-Nordvik Russia Fluorite optique Inclusions fluides Immiscibilité Taymir-Nordvik Russie |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
