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File:Psilomelane+Hausmanite.jpg

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Polished specimens of manganese ore from the Batesville district. Slab of manganese ore from the Wildcat prospect showing an intimate mixture of hausmanite and psilomelane in a roughly zonal arrangement and a radiating mass of white barite at the center. The light steel-gray mineral and the black mineral immediately adjacent to the barite are psilomelane: the rest of the black mineral is hausmanite. Natural size. Independence County, Arkansas. 1918.

Source

Plate 10-C in U.S. Geological Survey. Bulletin 734. 1923. Image file: http://libraryphoto.cr.usgs.gov/htmllib/btch415/btch415j/btch415z/mhd00334.jpg

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current17:37, 12 May 2008Thumbnail for version as of 17:37, 12 May 20081,400 × 1,345 (767 KB)Tillman (talk | contribs)Polished specimens of manganese ore from the Batesville district. Slab of manganese ore from the Wildcat prospect showing an intimate mixture of hausmanite and psilomelane in a roughly zonal arrangement and a radiating mass of white barite at the center.

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