The determination of phase relations in the CH4H2ONaCl system at 1 kbar, 400 to 600°C using synthetic fluid inclusions

摘要: Synthesis of fluid inclusions in the CH4H2ONaCl system was accomplished by subjecting fractured quartz, along with known quantities CH4, H2O, and NaCl, to a pressure 1 kbar temperatures 400, 500, or 600°C, sealed Au capsules. Under elevated P−T conditions some fractures healed, trapping fluids as inclusions. Microthermometric measurements conducted on show that at 400 there are very broad regions unmixing system. For those bulk compositions lie two-phase (i.e., immiscible fluids) field, high density phase is enriched whereas low CH4. any given composition, degree NaCl enrichment increases, CH4 decreases, temperature increases from 4.00 600°C.