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Keywords from Image Description:
Kristallzeichnungen Hydroxylherderit. de Zusammenstellung von Kristallzeichnungen von HydroxylherderitKristallen aus Drrfeld Zeitschrift fr Kristallographie und Mineralogie Band XLVII Tafel VIII und Samuel Penfield American Journal of Science Vol CXLVII Plate VIII own Erongoguy Hydroxylherderite Crystal morphologies Cczero