Acicular and granular surface of pyrolusite

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Source: Thuringia, Germany Width / Height of the photograph in mm: 46 /

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Size: 5120px × 3840px
Location: Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb, Croatia
Photo credit: © Borislav Dopudja / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: acicular, amorphous, black, braunite, chalcophanite, crystal, dioxide, fibrous, goethite, granular, group, hausmannite, hematite, hollandite, manganese, manganite, mineral, mineralogy, opaque, ore, pyrolusite, rgn, rgnf, rutile, science, stone, stones, structure, surface