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Zincowoodwardite: [Zn1-xAlx(OH)2][(SO4)x/2(H2O)n] Zaccagnaite: Zn4Al2(OH)12(CO3)ˇ3(H2O)
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
Zincowoodwardite: [Zn1-xAlx(OH)2][(SO4)x/2(H2O)n]
Comments: Botryoidal zincowoodwardite. The bluish-green color is due to a copper content. Location: Christiana Mine, Agios Konstantinos, Lavrion District, Attikí Prefecture, Greece. Scale: Picture size 10 mm. © Thomas Witzke / Abraxas-Verlag