Natural hollandite and romanechite are widespread barium-containing manganese minerals. High-resolution transmission electron microscopy indicates that intergrowths of the two minerals occur in a coherent manner on the unit-cell level with no apparent ordering of the hollandite and romanechite. Other structures have been imaged that are based on the hollandite and romanechite structures. Electron microscopy holds a key to unraveling the myriad structural complexities of the manganese oxides.

Original languageEnglish (US)
Pages (from-to)456-458
Number of pages3
Issue number4379
StatePublished - Jan 1 1979

ASJC Scopus subject areas

  • General

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