In this work, we investigated the M 3 (AsO 4 ) 2 ⋅ 8H 2 O end members annabergite ( M is Ni), erythrite ( M is Co), and hörnesite ( M is Mg) and their solid solutions. Acid-solution calorimetry and relaxation calorimetry were used to determine the solubility products ( log K sp ) for annabergite (…
In this work, we investigated the thermodynamic properties of synthetic schafarzikite (FeSb2O4) and tripuhyite (FeSbO4). Low-temperature heat capacity (Cp) was determined by relaxation calorimetry. From these data, third-law entropy was calculated as 110.7 ± 1.3 J mol−1 K−1 for tripuhyite and 187.1 ±…
In this work, fve Mg-silicate glasses with compositions between MgSiO3 and Mg2SiO4 were synthesized by aerodynamic levitation combined with laser melting. Low-temperature heat capacity (Cp) was measured (by relaxation calorimetry in the range 2–310 K) for all of them, with the resulting vibrational entropies…