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

Cryptochalcite, K 2 Cu 5 O(SO 4 ) 5 , and cesiodymite, CsKCu 5 O(SO 4 ) 5 , two new isotypic minerals and the K–Cs isomorphism in this solid-solution series Available to Purchase

New zinc and potassium chlorides from fumaroles of the Tolbachik volcano, Kamchatka, Russia: mineral data and crystal chemistry. II. Flinteite, K 2 ZnCl 4 Available to Purchase

New zinc and potassium chlorides from fumaroles of the Tolbachik volcano, Kamchatka, Russia: mineral data and crystal chemistry. I. Mellizinkalite, K 3 Zn 2 Cl 7 Available to Purchase

Laachite, (Ca,Mn) 2 Zr 2 Nb 2 TiFeO 14 , a new zirconolite-related mineral from the Eifel volcanic region, Germany Available to Purchase

Crystal chemistry of Rb-, Sr-, Ba-, Ca- and Pb-exchanged forms of natural hilairite Available to Purchase