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- Journal of the Washington Academy of Sciences, Vol. 10 (Classic Reprint)
Journal of the Washington Academy of Sciences, Vol. 10 (Classic Reprint)
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Excerpt from Journal of the Washington Academy of Sciences, Vol. 10
MIneralogy. - Hansmannite in the Batesville district, Arakansas. H. D. Miser and J. G. Fairchild, U. S. Geological Survey.
During the investigation of the manganese deposits of the Batesville district by the senior author, beginning in 1918, particular attention was given to a manganese mineral that has been previously classed as braunite. The mineral forms a large part of the marketed manganese ore and, being entirely free or almost free of chemically combined silica, differs in this respect from the typical braunite that is found in this district, as well as at practically all, if not all, other known localities. The two accompanying analyses by the junior author, taken in connection with the physical and optical properties of the mineral under discussion, indicate that it is hausmannite. Since only one other authentic occurrence of hausmannite in the United States has been reported and since it is, as stated above, one of the important ore-forming minerals of the Batesville district, this paper regarding it has been prepared.
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