Hydroxylbastnäsite-(La), an ‘old new’ bastnäsite-group mineral

Strontioborite: revalidation as a mineral species and new data

Savelievaite, Mg 2 CrO 2 (BO 3 ), the first natural borate with species-defining Cr 3+ and the ludwigite–savelievaite isomorphous series

Amableite-(Ce), Na 15 [(Ce 1.5 Na 1.5 )Mn 3 ]Mn 2 Zr 3 □Si[Si 24 O 69 (OH) 3 ](OH) 2 ⋅H 2 O, a new eudialyte-group mineral from Saint-Amable Sill, Québec, Canada

A new mineral cuprodobrovolskyite Na 4 Cu(SO 4 ) 3 from the Tolbachik volcano (Kamchatka, Russia) and relationships in the family of natural anhydrous Na–Cu sulfates

New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. XX. Evseevite, Na 2 Mg(AsO 4 )F, the first natural arsenate with an antiperovskite structure

Bakakinite, Ca 2 V 2 O 7 , a new mineral from fumarolic exhalations of the Tolbachik volcano, Kamchatka, Russia

Selsurtite, (H 3 O) 12 Na 3 (Ca 3 Mn 3 )(Na 2 Fe)Zr 3 □Si[Si 24 O 69 (OH) 3 ](OH)Cl⋅H 2 O, a new eudialyte-group mineral from the Lovozero alkaline massif, Kola Peninsula, Russia

New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. XIX. Axelite, Na 14 Cu 7 (AsO 4 ) 8 F 2 Cl 2

Zaykovite, Rh 3 Se 4 , a new mineral from the Kazan placer, South Urals, Russia

Columbite supergroup of minerals: nomenclature and classification

New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. XVIII. Khrenovite, Na 3 Fe 3+ 2 (AsO 4 ) 3 , the member with the highest sodium in the alluaudite supergroup

Bolotinaite, ideally (Na 7 □)(Al 6 Si 6 O 24 )F⋅4H 2 O, a new sodalite-group mineral from the Eifel palaeovolcanic region, Germany

Calciolangbeinite- O , a natural orthorhombic modification of K 2 Ca 2 (SO 4 ) 3 , and the langbeinite–calciolangbeinite solid-solution system

Kaznakhtite, Ni 6 Co 3+ 2 (CO 3 )(OH) 16 ⋅4H 2 O, a new natural layered double hydroxide, the member of the hydrotalcite supergroup

Nickolayite, FeMoP, a new natural molybdenum phosphide

Medvedevite, KMn 2+ V 5+ 2 O 6 Cl⋅2H 2 O, a new fumarolic mineral from the Tolbachik fissure eruption 2012–2013, Kamchatka Peninsula, Russia

Reznitskyite, CaMg(VO 4 )F, a new mineral from the Tolbachik volcano, Kamchatka, Russia and the first vanadate with a titanite-type structure

New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. XVII. Paraberzeliite, NaCaCaMg 2 (AsO 4 ) 3 , an alluaudite-group member dimorphous with berzeliite

Sapozhnikovite, Na 8 (Al 6 Si 6 O 24 )(HS) 2 , a new sodalite-group mineral from the Lovozero alkaline massif, Kola Peninsula