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Ussingite: Na2AlSi3O8(OH) Cuprostibite: Cu2(Sb,Tl)
Comments: Massive ussingite hosting grains of the very rare copper antimony-thallium bearing cuprostibite. Location: Ilimaussaq, Tasseq, Greenland. Scale: 4.8 x3.4 cm. © John Veevaert
Ussingite: Na2AlSi3O8(OH) Vuonnemite: Na11Nb2TiSi4O12(PO4)2O5F2
Comments: Massive, violet colored ussingite with a single bladed partial crystal of white vuonnemite 1.5 cm in length. Location: Mt. Karnasurf, Lovozero, Russia. Scale: 4.2 x 3 cm. © John Veevaert
Ussingite: Na2AlSi3O8(OH) Gerasimovskite: (Mn,Ca)(Nb,Ti)5O12·9(H2O) (?)
Comments: Pale tan gerasimovskite pseudomorphous after epistolite crystal, in purple ussingite. Location: Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species