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Fraipontite: (Zn,Al)3(Si,Al)2O5(OH)4 Zaccagnaite: Zn4Al2(OH)12(CO3)ˇ3(H2O)
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
Fraipontite: (Zn,Al)3(Si,Al)2O5(OH)4 Zinalsite: Zn2AlSi2O5(OH)4ˇ2(H2O) (?) Smithsonite: ZnCO3
Comments: Pearly white, sub-mm fraipontite (zinalsite) crystals associated with green smithsonite.
Location: Lavrion District Mines, Lavrion District, Attikí (Attica; Attika) Prefecture, Greece.
Scale: Specimen Size 1.4 x 1.0 x 0.9 cm.
© Rob Lavinsky