Katoite

 
Octahedral crystals in aggregates around magnetite. In association with afwillite.
Octahedral crystal faces in grape-shaped aggregates around magnetite with afwillite
Origin: Bellerberg, Eifel, Germany
Sample size: micromount (top), thumbnail (2nd row, bottom)
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

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