Influence of impurities on Cr 3+ luminescence properties in Brazilian emerald and alexandrite

On the structural relaxation around Cr 3+ along binary solid solutions

NQR/NMR and Mössbauer spectroscopy of sulfides: potential and versatility

Colourless aegirine in metamorphic rocks from Bayan Obo (Inner Mongolia): lack of charge transfer transitions as possible explanation

Optical absorption spectroscopy study of three synthetic V 3+ -bearing clinopyroxenes

First-principles studies of spin-state crossovers of iron in perovskite

Mn sites in cordierite – electron paramagnetic resonance, luminescence, and optical absorption analysis

Crystal chemistry of synthetic Co- and Ni-analogues of natrochalcite – the shortest known hydrogen bonds among mineral-type compounds. Part II: Spectroscopic studies

Comparative compressibilities of calcite-structure carbonates; deviations from empirical relations

Surface fractal dimensions of synthetic clay-hydrous iron oxide associations from nitrogen adsorption isotherms and mercury porosimetry

Crystal field spectrum of gamma -Ni 2 SiO 4

Causes of the purple and pink colours of manganoan sugilites from the Wessels Mine, South Africa

Crystal-field spectroscopic study of Cr-doped mullite

Crystal field spectra and geochemistry of transition metal ions in silicate melts and glasses

Static lattice energy minimization and lattice dynamics calculations on aluminosilicate minerals

The ionic model; perceptions and realities in mineralogy

Molecular orbital (SCF-Xalpha -SW) theory of Fe (super 2+) -Mn (super 3+), Fe (super 3+) -Mn (super 2+), and Fe (super 3+) -Mn (super 3+) charge transfer and magnetic exchange in oxides and silicates

Semiconducting band gaps of three lead-antimony sulfosalts

Hydrogen in humite-group minerals; structure-energy calculations

Possible sites for protonation in beta -Mg 2 SiO 4 from an experimentally derived electrostatic potential