... layers around Cs + , which readily sheds its hydration shell in favor of direct cation-surface oxygen interactions when equilibrated at low H 2 O activity as a result of its low charge density. In contrast, for Cs-hectorite hydrated at 100% relative humidity (R.H.) or in slurries with CsCl solution...

...S. Naamen; N. Jâafar; H. Ben Rhaiem; A. Ben Haj Amara; A. Plançon; F. MulLer Abstract An homogenous intercalated compound of dioctahedral 1:1 clay mineral with cesium chloride was prepared by immersing an homogeneous 8.4 Å hydrated nacrite in a CsCl-saturated solution. The nacrite/CsCl complex...

...–67.39 Ta SiO 2 0.46 n.d.-0.72 SiO 2 Cs 2 O 0.67 0.60–0.76 CsCl H 2 O * 4.84  Total 98.35 * Calculated from the structure refinement. The empirical formula, based on 2 cations at the B site is [□ 0.71 (H2O) 0.48 Ba 0.33 Sr 0.27 U 0.10 Mn 0.02 Nd 0.02 Ce 0 02...

... wt% H2O at 11 GPa Run no. Method Silica source T , °C τ, min Number of crystals Maximum crystal size, mm ∑m (Stv), mg H 2 O, wt. ppm Notes: SC = slow cooling method; TG = thermal gradient method; Qz = quartz; Stv = stishovite; ∑m (Stv) = total weight of grown...

... of compreignacite in a 2 m CsCl solution at 180°C for 24 h, and in a 100 ppm CsCl solution at 90°C for 14 days. Exchange of Cs into crystals of compreignacite was demonstrated by crystal-structure analysis for a crystal from 2 m solution and chemical analysis for crystals from both exchange experiments...

... salt liquid (at run conditions) < x salt saturation (at ambient conditions); iv) P-T conditions for use of most of the autoclaves are restricted to medium T (< 700 °C) and P (< 150 MPa). Based on the second component (e.g., non polar gases, electrolytes) in addition to H2O...

... , 1998 ; Grevel et al. 1998 ; Pawley et al. 1998 ). The volumetric behavior of the Ca-minerals zoisite [Ca 2 Al 3 (SiO 4 )(Si 2 O 7 )O(OH)] and lawsonite [CaAl 2 (Si 2 O 7 )(OH)2 H2O] is of particular interest because these are stable to pressures of ~7 GPa and more ( Pawley 1994 ; Schmidt and Poli...

... In previous studies, we showed that CsCl and CsBr-kaolinite intercalation complexes, where alkali halides and H 2 O intercalate kaolinite, can be prepared by grinding clay-salt mixtures with a limited amount of water; intercalation was proven by infrared (IR) spectroscopy ( Michaelian et al., 1991a , 1991b...

... is sometimes optically obscured by a granulation of the frozen liquid. In some cases, for instance in CsCl-bearing fluids ( Dubois et al., 1993 ), an intense darkening of the frozen liquid is observed. Similarly, in all our samples, during heating, a very slow rearrangement of the frozen liquid was observed...

.... Temperature was corrected for deviations from standard emf according to the manufacturer’s calibration table, and the effect of pressure on emf is considered to be insignificant using this type of thermocouple. The piston-in technique was used in all experiments apart from the 19 mm talc-pyrex CsCl melting...

... indicate different crystals of An after run in 0.1 m CsCl, and squares after leaching run in water. The surface of albite was practically devoid of Cs. The amount of Cs present was less than the error of analysis (< 0.05 wt. %). Two different series of runs were performed at 250 and 300°C...

... that H exchange into sitinakite-Na occurred faster than data collection could resolve, and therefore it was unknown how the Na was removed. However, H pre-exchange allows for fast Cs ion exchange (<2.5 min), whereas the exchange process is >2 h. (at a flow rate ≈2 mL/min and ≈10 mM CsCl) if Cs...

... correspond to the study of Bose and Ganguly (1995) , performed at 900 °C with CsCl cells. At 900 °C, the friction value decreases of about 2% every 10 h for experimental durations >6 h. At 1300 °C, no friction decrease is observed between 6 and 24 h. Lower pressure (kushiroite experiments) and sizing...

...Ryean-Marie Woods; Mickey E. Gunter Abstract Batch cation-exchange experiments were performed by placing 4 g of clinoptilolite-rich rock into 100 mL of 1 M concentrations of NaCl or CsCl solution for differing times and temperatures. The solutions were analyzed for the outgoing cations Na, K, Ca...

... the melting point of CsCl, which was found to be within 5 °C of the thermocouple reading. The HDAC has been calibrated up to 800 °C by observing the melting point or phase transition of NaNO 3 , CsCl, and NaCl, and measured temperatures were systematically lower by ~0.85% over the entire range studied...

...-Źunić et al. 2002 Komarovite**
 Ca 2−x (Nb,Ti) 6 Si 4 O26(OH)2• n H2O ? (ortho rhombic) 21.30 14.00 17.19 15.6 0.67 Portnov et al. 1971 ; Krivokoneva et al. 1979 Sazykinaite-(Y)
 Na 5 YZrSi 6 O 18 •6H 2 O R 32 10.82 10.82 15.81 120 15.0 3 Hilairite group. See...

...-MgO-FeO-Fe 2 O 3 -Al 2 O 3 -SiO 2 -TiO 2 -H 2 O-CO 2 . J. Petrol ., 29 , 445 – 522 . Decker , D.L. ( 1971 ): High-pressure equation of state for NaCl, KCl, and CsCl . J. appl. Phys ., 42 , 3239 – 3244 . Duffy , T.S. & Wang , Y. ( 1998 ): Pressure-volume...

.... Schemes of high-pressure cell ( a ) and platinum ampoule with an inner graphite capsule ( c ), and photo of the central part of the cell after the experiment ( b ). 1 – ZrO 2 + CsCl ( t -ZrO 2 stabilized by admixture of CaO), 2 – talc ceramics, 3 – CsCl, 4 – graphite heater, 5 – MgO + CsCl, 6...

... developed a novel standard for this purpose consisting of a mixture of CsCl + W + BN. CsCl ( Decker 1971 ) and W ( Hixson and Fritz 1992 ) act as pressure standards, whereas BN inhibits recrystallization. CsCl is highly compressible ( K 0 = 16.7, Kohler et al. 1997 ) and has no systematic peak absences...

... ( Fuhrmann et al. 1987 ). Potassium was determined in duplicate by flame photometry using an Eppendorf Elex 63/61. The samples were dissolved in a mixture of HF and HNO 3 according to the technique of Heinrichs and Herrmann (1990) . CsCl and LiCl were added as ionisation buffer and internal standard...