Dark-coloured Mn-rich overgrowths in an elbaitic tourmaline crystal from the Rosina pegmatite, San Piero in Campo, Elba Island, Italy: witness of late-stage opening of the geochemical system

Crystal chemistry of povondraite by single-crystal XRD, EMPA, Mössbauer spectroscopy and FTIR

Blue growth zones caused by Fe 2+ in tourmaline crystals from the San Piero in Campo gem-bearing pegmatites, Elba Island, Italy

Uvite, CaMg 3 (Al 5 Mg)(Si 6 O 18 )(BO 3 ) 3 (OH) 3 (OH), a new, but long-anticipated mineral species of the tourmaline supergroup from San Piero in Campo, Elba Island, Italy

Princivalleite, Na(Mn 2 Al)Al 6 (Si 6 O 18 )(BO 3 ) 3 (OH) 3 O, a new mineral species of the tourmaline supergroup from Veddasca Valley, Varese, Italy

Water in omphacite fingerprints the thermal history of eclogites

Mn-bearing purplish-red tourmaline from the Anjanabonoina pegmatite, Madagascar

Crystal-chemistry of sulfates from the Apuan Alps (Tuscany, Italy). VI. Tl-bearing alum-(K) and voltaite from the Fornovolasco mining complex

Redefinition of coquimbite, AlFe 3+ 3 (SO 4 ) 6 (H 2 O) 12 ⋅6H 2 O

Bohuslavite, Fe 4 3 + (PO 4 ) 3 (SO 4 )(OH)(H 2 O) 10 · n H 2 O, a new hydrated iron phosphate-sulfate

Hjalmarite, a new Na–Mn member of the amphibole supergroup, from Mn skarn in the Långban deposit, Värmland, Sweden

OH defects in quartz as monitor for igneous, metamorphic, and sedimentary processes

Crystal chemistry of Al–V–Cr oxy-tourmalines from Sludyanka complex, Lake Baikal, Russia

Oxy-foitite, □ (Fe 2+ Al 2 )Al 6 (Si 6 O 18 )(BO 3 ) 3 (OH) 3 O, a new mineral species of the tourmaline supergroup

Lucchesiite, CaFe 2+ 3 Al 6 (Si 6 O 18 )(BO 3 ) 3 (OH) 3 O, a new mineral species of the tourmaline supergroup

Influence of the octahedral cationic-site occupancies on the framework vibrations of Li-free tourmalines, with implications for estimating temperature and oxygen fugacity in host rocks

Experimental hydration of natural volcanic clinopyroxene phenocrysts under hydrothermal pressures (0.5–3 kbar)

Polarized IR and Raman spectra of zoisite: insights into OH-dipole orientation and the luminescence

Water incorporation in omphacite: concentrations and compositional relations in ultrahigh-pressure eclogites from Pohorje, Eastern Alps

Crystal chemistry of spinels in the system MgAl 2 O 4 -MgV 2 O 4 -Mg 2 VO 4