Hollandite (large, exceptional crystal)

Item Description

Outstanding single crystal of the barium manganese oxide Hollandite. It is well-terminated, with a very good metallic luster on the prism faces. For a species that is most often found in radial botryoids or tiny acicular starbursts, this it really rather an amazing specimen for the species. Hoppel obtained this from a well known old German dealer in the 1990s. Valued $1000