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Keywords from Image Description:
Resinoid crystal of manganese dioxide. en Dendrites of manganese dioxide on stratum plane of limestone from Solnhofen Bayern Germany University of Tsukuba is owning this ja de Dendriten aus Mangandioxyd auf einer Schichtflche von Kalkstein von Solnhofen Bayern Deutschland Exemplar im Besitz der Universitt von Tsukuba fr C'est