Cesiokenopyrochlore, the First Natural Niobate with an Inverse Pyrochlore Structure

Ferroefremovite, (NH 4 ) 2 Fe 2+ 2 (SO 4 ) 3 , a new mineral from Solfatara di Pozzuoli, Campania, Italy

Chukotkaite, AgPb 7 Sb 5 S 15 , a new sulfosalt mineral from Eastern Chukotka, Russia

Hingganite-(Nd), Nd 2 □Be 2 Si 2 O 8 (OH) 2 , a new gadolinite-supergroup mineral from Zagi Mountain, Pakistan

Eleomelanite, (K 2 Pb)Cu 4 O 2 (SO 4 ) 4 , a new mineral species from the Tolbachik Volcano, Kamchatka, Russia

Bojarite, Cu 3 (N 3 C 2 H 2 ) 3 (OH)Cl 2 ⋅6H 2 O, a new mineral species with a microporous metal–organic framework from the guano deposit at Pabellón de Pica, Iquique Province, Chile

The mineralogy of the historical Mochalin Log REE deposit, South Urals, Russia. Part III. Percleveite-(La), La 2 Si 2 O 7 , a new REE disilicate mineral

The mineralogy of the historical Mochalin Log REE deposit, South Urals, Russia. Part II. Radekškodaite-(La), (CaLa 5 )(Al 4 Fe 2+ )[Si 2 O 7 ][SiO 4 ] 5 O(OH) 3 and radekškodaite-(Ce), (CaCe 5 )(Al 4 Fe 2+ )[Si 2 O 7 ][SiO 4 ] 5 O(OH) 3 , two new minerals with a novel structure-type belonging to the epidote–törnebohmite polysomatic series

Luboržákite, Mn 2 AsSbS 5 , a new member of pavonite homologous series from Vorontsovskoe gold deposit, Northern Urals, Russia

New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. XIV. Badalovite, NaNaMg(MgFe 3+ )(AsO 4 ) 3 , a member of the alluaudite group

The mineralogy of the historical Mochalin Log REE deposit, South Urals, Russia. Part I. New gatelite-group minerals ferriperbøeite-(La), (CaLa 3 )(Fe 3+ Al 2 Fe 2+ )[Si 2 O 7 ][SiO 4 ] 3 O(OH) 2 and perbøeite-(La), (CaLa 3 )(Al 3 Fe 2+ )[Si 2 O 7 ][SiO 4 ] 3 O(OH) 2

Oxybismutomicrolite, a new pyrochlore-supergroup mineral from the Malkhan pegmatite field, Central Transbaikalia, Russia

Akopovaite, Li 2 Al 4 (OH) 12 (CO 3 )(H 2 O) 3 , a new Li member of the hydrotalcite supergroup from Turkestan Range, Kyrgyzstan

Fluorapophyllite-(Cs), CsCa 4 (Si 8 O 20 )F(H 2 O) 8 , a new apophyllite-group mineral from the Darai-Pioz Massif, Tien-Shan, northern Tajikistan

Alkali sulfates with aphthitalite-like structures from fumaroles of the Tolbachik Volcano, Kamchatka, Russia. I. MetathÉnardite, a natural high-temperature modification of Na 2 SO 4

Elasmochloite, Na 3 Cu 6 BiO 4 (SO 4 ) 5 , a new fumarolic mineral from the Tolbachik volcano, Kamchatka, Russia

New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. X. Edtollite, K 2 NaCu 5 Fe 3+ O 2 (AsO 4 ) 4 , and alumoedtollite, K 2 NaCu 5 AlO 2 (AsO 4 ) 4

New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. XIII. Pansnerite, K 3 Na 3 Fe 3+ 6 (AsO 4 ) 8

The Crystal Structure of Polylithionite-1 M from Darai-Pioz, Tajikistan: the Role of Short-range Order in Driving Symmetry Reduction in 1 M Li-rich Mica

Aleutite [Cu 5 O 2 ](AsO 4 )(VO 4 )·(Cu 0.5 □ 0.5 )Cl, a new complex salt-inclusion mineral with Cu 2+ substructure derived from a Kagome-net