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Tinzenite: (Ca,Mn,Fe)3Al2BO3Si4O12(OH)
Comments: Orange bladed aggregate of tinzenite crystals and clear quartz. Location: Molinello mine, Val Graveglia, Italy. Scale: 5.8x3.6x3.3 cm. © Richard Dale / Dale Minerals
Wadeite: K2ZrSi3O9
Comments: Sharp hexagonal crystal of wadeite with included dark green aegirine. Location: Mt. Kukisvumchurr, Khibiny Massif (Russia). Scale: 12x10x6 mm. © Richard Dale / Dale Minerals
Winchite: [ ](CaNa)Mg4(Al,Fe3+)Si8O22(OH)2 Sodalite: Na8Al6Si6O24Cl2
Comments: Purple sodalite with some crystal faces, supporting a very sharp, transparent winchite crystal, terminated on one end. Location: Sar-e-Sang, Kokcha Valley, Badakshan Province, Afghanistan. Scale: 11x10x8 mm. © Richard Dale / Dale Minerals