1. High-temperature ramsdellite–pyrolusite transformation kinetics

   • Nadia Curetti
   • Davide Bernasconi
   • Alessandro Pavese

   Original Paper 19 October 2021 Article: 43

   

2. Optically active centers in brown type IaAB diamonds from the Istok placer in the northeastern Siberian Platform: spectroscopic properties and the effect of HPHT treatment

   • V. A. Nadolinny
   • Yu N. Palyanov
   • M. I. Guskova

   Original Paper 16 October 2021 Article: 42

   

3. A comparative study on pressure-induced structural transformations in a basaltic glass and melt from Ab initio molecular dynamics calculations

   • Shiquan Feng
   • Arnab Majumdar
   • John S. Tse

   Original Paper 13 October 2021 Article: 41

   

4. Characterisation of contact twinning for cerussite, \(\hbox {PbCO}_3\), by single-crystal NMR spectroscopy

   • Otto E. O. Zeman
   • Jennifer Steinadler
   • Thomas Bräuniger

   Original Paper Open access 07 October 2021 Article: 40