THE BEHAVIOR OF H2O AND CO2 IN HIGH-TEMPERATURE LEAD BORATE SOLUTION CALORIMETRY OF VOLATILE-BEARING PHASES

Citation
A. Navrotsky et al., THE BEHAVIOR OF H2O AND CO2 IN HIGH-TEMPERATURE LEAD BORATE SOLUTION CALORIMETRY OF VOLATILE-BEARING PHASES, The American mineralogist, 79(11-12), 1994, pp. 1099-1109
Citations number
27
Categorie Soggetti
Geology,Mineralogy
Journal title
ISSN journal
0003004X
Volume
79
Issue
11-12
Year of publication
1994
Pages
1099 - 1109
Database
ISI
SICI code
0003-004X(1994)79:11-12<1099:TBOHAC>2.0.ZU;2-K
Abstract
High-temperature oxide melt solution calorimetry with molten 2PbO.B2O3 as a solvent can be used for determining enthalpies of formation of c arbonates and hydrous silicates. Under conditions of gas flow at 1-2 c m3/s, all H2O and CO2 is expelled from the solvent, leading to a repro ducible final thermodynamic state. Both analytical data and a number o f thermodynamic cycles show that, under these conditions, the volatile s neither dissolve in nor interact energetically with the melt.