Lumping and splitting: Toward a classification of mineral natural kinds

Acceptance of the Dana Medal of the Mineralogical Society of America for 2021

Structural and chemical complexity of minerals: an update

The new mineral zolotarevite, Na 5 Zr[Si 6 O 15 (ОН) 3 ]⋅2–3H 2 O, the first highly hydrated lovozerite-group member from the Lovozero alkaline massif, Kola Peninsula, Russia

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

The Distinctive Mineralogy of Carbonatites

Mineralogy and petrology of alkaline rocks and carbonatites: Celebrating the life and work of Gregory Yu. Ivanyuk (1966–2019)

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

Vasilseverginite, Cu 9 O 4 (AsO 4 ) 2 (SO 4 ) 2 , a new fumarolic mineral with a hybrid structure containing novel anion-centered tetrahedral structural units

Dobrovolskyite, Na 4 Ca(SO 4 ) 3 , a new fumarolic sulfate from the Great Tolbachik fissure eruption, Kamchatka Peninsula, Russia

Crystal chemistry of the variscite and metavariscite groups: Crystal structures of synthetic CrAsO 4 ⋅2H 2 O, TlPO 4 ⋅2H 2 O, MnSeO 4 ⋅2H 2 O, CdSeO 4 ⋅2H 2 O and natural bonacinaite, ScAsO 4 ⋅2H 2 O

Petrovite, Na 10 CaCu 2 (SO 4 ) 8 , a new fumarolic sulfate from the Great Tolbachik fissure eruption, Kamchatka Peninsula, Russia

Negevite, the pyrite-type NiP 2 , a new terrestrial phosphide

Transjordanite, Ni 2 P, a new terrestrial and meteoritic phosphide, and natural solid solutions barringerite-transjordanite (hexagonal Fe 2 P–Ni 2 P)

Crystal chemistry of natural layered double hydroxides. 5. Single-crystal structure refinement of hydrotalcite, [Mg 6 Al 2 (OH) 16 ](CO 3 )(H 2 O) 4

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)

Crystal chemistry of natural layered double hydroxides: 4. Crystal structures and evolution of structural complexity of quintinite polytypes from the Kovdor alkaline-ultrabasic massif, Kola peninsula, Russia

The crystal structure of ginorite, Ca 2 [B 14 O 20 (OH) 6 ]·5H 2 O, and the analysis of dimensional reduction and structural complexity in the CaO–B 2 O 3 –H 2 O system