New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. II. Ericlaxmanite and kozyrevskite, two natural modifications of Cu 4 O(AsO 4 ) 2 Available to Purchase

New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. I. Yurmarinite, Na 7 (Fe 3+ ,Mg,Cu) 4 (AsO 4 ) 6 Available to Purchase

Ekplexite (Nb,Mo)S 2 ·(Mg 1−x Al x )(OH) 2+x , kaskasite (Mo,Nb)S 2 ·(Mg 1−x Al x )(OH) 2+x and manganokaskasite (Mo,Nb)S 2 ·(Mn 1−x Al x )(OH) 2+x , three new valleriite-group mineral species from the Khibiny alkaline complex, Kola peninsula, Russia Available to Purchase

A review of crystal chemistry of natural silicates of alkaline elements in the light of new structural data Available to Purchase

Yaroshevskite, Cu 9 O 2 (VO 4 ) 4 Cl 2 , a new mineral from the Tolbachik volcano, Kamchatka, Russia Available to Purchase

The sulfite anion in ettringite-group minerals: a new mineral species hielscherite, Ca 3 Si(OH) 6 (SO 4 )(SO 3 )·11H 2 O, and the thaumasite–hielscherite solid-solution series Available to Purchase

Pb 2 (AsO 2 OH)Cl 2 , a new phase from the Lavrion ancient slags, Greece: occurrence and characterization Available to Purchase

Calciolangbeinite, K 2 Ca 2 (SO 4 ) 3 , a new mineral from the Tolbachik volcano, Kamchatka, Russia Available to Purchase

Metavivianite, Fe 2+ Fe 2 3 + (PO 4 ) 2 (OH) 2 ·6H 2 O: new data and formula revision Available to Purchase

The crystal structure of Pb 5 (As 3+ O 3 )Cl 7 from the historic slags of Lavrion, Greece – a novel Pb(II) chloride arsenite Available to Purchase

Noonkanbahite, BaKNaTi 2 (Si 4 O 12 )O 2 , a new mineral species: description and crystal structure Available to Purchase

Crystal-structure refinement of a Zn-rich kupletskite from Mont Saint-Hilaire, Quebec, with contributions to the geochemistry of zinc in peralkaline environments Available to Purchase