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AmethystSchleusingen. Riesengeode ExemplarNr NHMSM aus Rio Grande do Sul Brasilien mit Auskleidung aus Amethyst und einzelnen KalzitKristallen im Naturhistorischen Museum Schleusingen Die Geode stammt aus einem Basalt Giant geode specimen no NHMSM from Rio Grande do Sul Brazil coated with amethyst and few single calcite crystals