Franklinite and calcite, from Franklin, New Jersey, USA. This sample contains conspicuous black franklinite, a spinel mineral with composition (Zn,Fe,Mn)(Fe,Mn)2O4, and calcite. It is from the famous mine and mineral deposit area at Franklin, New Jersey. The specimen is about 11 cm across.

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Size: 2086px × 1316px
Location: New Jersey
Photo credit: © Historic Illustrations / Alamy / Afripics
License: Royalty Free
Model Released: No

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