caa a22 4500 46321739X CHVBK 20180405153201.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s00269-007-0191-5 doi (NATIONALLICENCE)springer-10.1007/s00269-007-0191-5 Thermodynamic mixing behavior of synthetic Ca-Tschermak-diopside pyroxene solid solutions: I. Volume and heat capacity of mixing [Elektronische Daten] [Katja Etzel, Artur Benisek, Edgar Dachs, Lado Cemič] The unite cell parameters and heat capacities of a series of synthetic clinopyroxenes on the join Ca-Tschermak (CaTs)−diopside (Di) were measured using X-ray powder diffraction and calorimetric methods, respectively. The volume of mixing at 298K shows a negative asymmetric deviation from ideality. A two-parameter Margules fit to the data yields W CaTs−Di V =−0.29±0.11cm3mol−1 and W Di−CaTs V =−1.14 ± 0.14cm3mol−1. Heat capacities were determined between 5 and 923K by heat-pulse at 5−302K and differential-scanning calorimetry at 143−923K. The precision of the low and high temperature C p data is better than ±1%. Polynomials of the form C p =a+bT −1/2+cT −2+dT −3 were fitted to the C p data in the temperature range between 250 and 925K. Thermal entropy values [S 298−S 0] and [S 900−S 0] as well as enthalpies [H 298−H 0] and [H 900−H 0] were calculated for all members of the solid solution series. No significant deviation from ideal mixing behavior was observed. Springer-Verlag, 2007 Tschermakitic pyroxene nationallicence Heat capacity nationallicence Molar volume nationallicence Entropy nationallicence Enthalpy nationallicence Etzel Katja Institut für Geowissenschaften, Universität Kiel, Kiel, Germany aut Benisek Artur Institut für Geowissenschaften, Universität Kiel, Kiel, Germany aut Dachs Edgar Fachbereich Materialwissenschaften, Abteilung Mineralogie, Universität Salzburg, Salzburg, Austria aut Cemič Lado Institut für Geowissenschaften, Universität Kiel, Kiel, Germany aut Physics and Chemistry of Minerals Springer-Verlag 34/10(2007-12-01), 733-746 0342-1791 34:10<733 2007 34 269 https://doi.org/10.1007/s00269-007-0191-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00269-007-0191-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Etzel Katja Institut für Geowissenschaften, Universität Kiel, Kiel, Germany aut NATIONALLICENCE 700 1- Benisek Artur Institut für Geowissenschaften, Universität Kiel, Kiel, Germany aut NATIONALLICENCE 700 1- Dachs Edgar Fachbereich Materialwissenschaften, Abteilung Mineralogie, Universität Salzburg, Salzburg, Austria aut NATIONALLICENCE 700 1- Cemič Lado Institut für Geowissenschaften, Universität Kiel, Kiel, Germany aut NATIONALLICENCE 773 0- Physics and Chemistry of Minerals Springer-Verlag 34/10(2007-12-01), 733-746 0342-1791 34:10<733 2007 34 269 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 458121630 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer