Thermodynamic properties of minerals and related substances at 298.15 K and 1 bar (105 pascals) pressure and at higher temperatures
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Geology topics
Publications and source records attributed to James R. Fisher.
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The heat capacities of gibbsite and magnesite were measured between 13 and 380 K by means of an adiabatic calorimeter. The heat capacity of gibbsite was measured continuously between 340 and 480 K by means of a differential scanning calorimeter. Tables of the thermodynamic functions C° P , (H° T –H° O )/T ,– (G° T –H° O )/T , and S° T –S° O are presented for these phases at integral temperatures. S° T –S° O are 68.44±0.14 J/(K•mol) and 65.09±0.13 J/(K•mol) at 298.15 K for gibbsite and magnesite, respectively. The heat capacities of Calorimetry Conference benzoic acid have been remeasured between 12 and 316 K.
A graphical display of the volumetric properties of H 2 O is presented as density (0.01 to 1.0 g-cm -3 ) contoured on pressure-temperature coordinates and pressure (1-10,000 bars) contoured on density-temperature coordinates over the temperature range 0-1,000 °C. Data were obtained from sources published during 1964-1969; several minor inconsistencies are observed and attributed to inadequacies in the equations of state used to describe experimental data obtained above 1,000 bars.