underthescopemineral:

Bariopharmacosiderite      
       

Ba0.5Fe3+4(AsO4)3(OH)4·5H2O

Locality:

Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany

Field of View: 2.72 mm

Beautiful green pseudocubes of bariopharmacosiderite in a quartz cavity 
Photo: Michael Förch

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