Brian, many thanks for your prompt response! I should have mentioned using thermo.dat. I entered and saved a mole volume of 233.54 cm3 for ripidolite-14A. It is now working nicely. Cheers!
I am working in React (GWB Pro 9.0) and cannot enter Ripidolit-14A concentration in [cm3]. As a consequence, the output file does not contain data for delta [cm3] either. The entry for all other minerals works well. Have I come across a bug?