Click on thumbnails for a larger image. Please be patient since some of these pages of thumbnail images take some time to load. These mineral photos are copyrighted by their owners and may not be used without permission.
Zaccagnaite: Zn4Al2(OH)12(CO3)·3(H2O) Fraipontite: (Zn,Al)3(Si,Al)2O5(OH)4
Comments: Scanning electron microscope image of hexagonal, tapering, prismatic zaccagnaite crystals, covered by a thin crust of fraipontite. (AmMin 86:1294). Location: Marble quarries of the Carrara basin (Apuan Alps, Italy). Scale: See Image. © American Mineralogist
Zaccagnaite: Zn4Al2(OH)12(CO3)·3(H2O) Zincowoodwardite: [Zn1-xAlx(OH)2][(SO4)x/2(H2O)n]
Comments: White to pale bluish zaccagnaite intimately intergrown with zincowoodwardite. Location: Hilarion Mine, Agios Konstantinos, Lavrion District, Attikí Prefecture, Greece. Scale: Picture size 4 mm. © Thomas Witzke / Abraxas-Verlag