Abstract
This article was prepared in 2011 and its publication at this time represents a reminder to Prof. doctor Herbert Pöllmann, who contributed to the field and analytical activities. The manganese ore from Urucum, in Mato Grosso do Sul, constitutes an important reserve of this mineral good and in recent years has been the scene of many constant researches in several publications, mainly in the last five years, with emphasis on both Mn and Fe. At the time we analyzed the few samples of this unpretentious article, publications were still scarce. Our analyzes are restricted to a few samples and the sampling is not representative of the different levels at which Mn ore occurs. The mineralogical and chemical results of these samples indicate mineralogy dominated by cryptomelana and low concentrations of most trace elements, especially REE. Anomalous are mainly Ba, Sr and Co. The origin o this ore is undoubtedly sedimentary, with little or no terrigenous contribution.
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