Franklinite, an oxide of zinc, iron and manganese, chemical formula (Zn,Fe,Mn)(Fe,Mn)2O4. This mineral with black metallic crystals belongs to the iso

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Franklinite, an oxide of zinc, iron and manganese, chemical formula (Zn,Fe,Mn)(Fe,Mn)2O4. This mineral with black metallic crystals belongs to the isometric crystal system of octahedrons which often have rounded edges. Host rock is calcite and the red mineral (top left) is zincite. From Franklin in New Jersey, USA. Width 90mm.

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Size: 5125px × 3417px
Photo credit: © DIRK WIERSMA/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: calcite, crystal, crystals, environment, franklin, franklinite, geological, geology, iron, isometric, jersey, manganese, mineral, nature, octahedrons, oxide, rock, system, usa, zinc, zincite