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Znucalite: CaZn11(UO2)(CO3)3(OH)20·4(H2O)
Comments: Cream-yellow botryoidal znucalite. Location: St Christoph Mine, Bärenhecke, Glashütte, Erzgebirge, Saxony, Germany. Scale: Picture size 4 mm. © Thomas Witzke / Abraxas-Verlag
Comments: Very pale bluish white, porcelaneous crust of znucalite on matrix. Location: Mine dump near: Pribam, Bohemia, Czech Republic. Scale: Picture size 5 mm. © Paul M. Schumacher