Dmitryvarlamovite, Ti 2 (Fe 3+ Nb)O 8 , a new columbite-supergroup mineral related to the wolframite group

Structural and chemical complexity of minerals: an update

The complex mechanism of Ti 4+ incorporation into litidionite from the Somma–Vesuvius volcano, Italy

Trigonal variation in the garnet supergroup: the crystal structure of nikmelnikovite, Ca 12 Fe 2+ Fe 3+ 3 Al 3 (SiO 4 ) 6 (OH) 20 , from Kovdor massif, Kola Peninsula, Russia

Crystal chemistry of ivanyukite-group minerals, A 3– x H 1+ x [Ti 4 O 4 (SiO 4 ) 3 ](H 2 O) n ( A = Na, K, Cu), ( n = 6–9, x = 0–2): crystal structures, ion-exchange, chemical evolution

Milanriederite, (Ca, REE ) 19 Fe 3+ Al 4 (Mg,Al,Fe 3+ ) 8 Si 18 O 68 (OH,O) 10 , a new vesuvianite-group mineral from the Kombat Mine, Namibia

Hydroxynatropyrochlore, (Na,Сa,Ce) 2 Nb 2 O 6 (OH), a new member of the pyrochlore group from the Kovdor phoscorite–carbonatite pipe, Kola Peninsula, Russia

Selivanovaite, NaTi 3 (Ti,Na,Fe,Mn) 4 [(Si 2 O 7 ) 2 O 4 (OH,H 2 O) 4 ]· n H 2 O, a new rock-forming mineral from the eudialyte-rich malignite of the Lovozero alkaline massif (Kola Peninsula, Russia)

Cyprine, Ca 19 Cu 2+ (Al,Mg,Mn) 12 Si 18 O 69 (OH) 9 , a new vesuvianite-group mineral from the Wessels mine, South Africa

Si-deficient, OH-substituted, boron-bearing vesuvianite from Sakha-Yakutia, Russia: a combined single-crystal, 1 H MAS-NMR and IR spectroscopic study