Browsing by Subject "Silicate"
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Item Phase relations in the system NaCl-SiO₂-H₂O(1969) Cook, L. P.; Not availablePhase relations in the anhydrous portion of the system were investigated at 770°C to 930°C and pressures of 1, 500, and 1000 bars. In the wet system, experiments were conducted from 700°C to 900°C at 1000 bars. Immiscibility of silicate and halide melts is the characteristic feature at all compositions studied. In anhydrous runs, melting and immiscibility probably begin at temperatures below 770°C; in the wet system, at temperatures below 740°C, and possibly below 700°C. The wet system is not truly ternary, for quartz, halite and water react to form a sodium silicate phase and HCl. Great difficulty was encountered attaining equilibrium; probably in the majority of runs equilibrium was not reached. The lowering of melting temperature and immiscibility in this system have potential applications to natural melts