Experimental determination of the two-phase (liquid and vapour) region in water-alkali chloride binary systems at 500° and 600°C using synthetic fluid inclusions

Experimental Studies in Model Fluid Systems

“…Thus, plotting the squared mole fraction difference (x salt liquid -x salt vapor ) 2 of co-existing vapor and liquid versus sampling pressure P yields the critical pressure P c for (x salt liquid -x salt vapor ) 2 = 0. According to the law of rectilinear diameters, the average mole fractions (x salt liquid + x salt vapor )/2 of co-existing vapor and liquid should defi ne a linear relationship with sampling pressure, which intersects the critical pressure P c at the critical composition x c (Kay and Rambosek 1953;Rowlinson and Swinton 1982;Dubois et al 1994). For those studies on P-V-T-x relations in binary H 2 O-salt systems that lack data for the critical curve, critical pressure P c and critical composition x c for the respective isotherms were calculated for this review according to the above mentioned relation between (x salt liquid -x salt vapor ) 2 , (x salt liquid + x salt vapor )/2, P, P c , and x c .…”

A new method for synthesizing fluid inclusions in fused silica capillaries containing organic and inorganic material

“…Considerable advances in our understanding of physicochemical properties of geological fluids and their roles in many geological processes have been achieved by the use of synthetic fluid inclusions produced by healing microfractures in quartz and/or quartz overgrowth under specified pressure (P)-temperature (T) conditions (e.g., Roedder and Kopp, 1975;Shelton and Orville, 1980;Sterner and Bodnar, 1984;Bodnar and Sterner, 1985;Zhang and Frantz, 1987;Dubois et al, 1994;Sawaki et al, 1997;Pironon, 2003a,b, 2004;Lin, 2005), and by trapping immiscible fluids in quenched silicate melts (Simon et al, 2007). However, these advances were mostly limited to inorganic systems due to the fact that relatively high temperature (>250°C) is required for the effective healing of fractures and/or overgrowth, and the fact that organic compounds tend to react with water at these temperatures 0016-7037/$ -see front matter Published by Elsevier Ltd. doi:10.1016/j.gca.2008.07.030 Pironon, 2003a,b, 2004;Lin, 2005), making it difficult to form fluid inclusions containing pristine organic materials.…”

Properties of Mixtures with Water

“…Water-salt systems with a continuous critical curve are [27], for example, NH 3 [130,131], H 2 O-CaCl 2 [132,133], H 2 O-CsCl [134,135], H 2 O-KCl [132,135], H 2 O-KH 2 PO 4 FIGURE 3.57 Solubility of SiO 2 in water. Data from Ref.…”

“…[37]. [136,137], H 2 O-KNO 3 [138,139], H 2 O-LiCl [135,140], H 2 O-MgCl 2 [132], H 2 O-NaCl [141][142][143], H 2 O-Na 2 WO 4 [142,144], and H 2 O-UO 2 SO 4 [145,146].…”