Mineral: Prehnite on calcite
Locality: Diabase Quarry, Hartenrod, Gladenbach, Dillenburg, Lahn-Dill-Kreis District, Gießen Region, Hesse/Hessen, Germany
Dimensions: Specimen size 18 cm

Description: Collection: Gerd Kerkhey, Marburg, displayed at Mineralogical Museum Marburg (my photo)

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