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. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.