The crystal chemistry of inderite, a hydrous borate with known ideal formula MgB 3 O 3 (OH) 5 ·5H 2 O from the Kramer deposit, was re-investigated by electron probe micro-analysis in wavelength dispersive mode, laser ablation-(multi collector-)inductively coupled plasma-mass spectrometry and single-crystal neutron diffraction. The chemical data prove that the real composition of the investigated inderite is substantially ident...

The high-pressure behavior of the natural arsenate gasparite-(Ce) [Ce 0.43 La 0.24 Nd 0.15 Ca 0.11 Pr 0.04 Sm 0.02 Gd 0.01 (As 0.99 Si 0.03 O 4 )] from the Mt. Cervandone mineral deposit (Piedmont Lepontine Alps, Italy), has been studied by in situ single-crystal synchrotron X-ray diffraction up to 22.01 GPa. Two distinct high-pressure ramps have been performed, using a 16:3:1 methanol:ethanol:water solution and helium as P -t...

The crystal structure and crystal chemistry of meyerhofferite, ideally CaB 3 O 3 (OH) 5 ·H 2 O, was investigated by a multi-methodological approach based on titrimetric determination of boron, gravimetric determination of calcium, determination of fluorine by ion selective electrode, determination of water content by heating, other minor elements by inductively coupled plasma atomic emission spectroscopy, along with single-cry...