Mineral: Pyrite
Locality: C. E. Duff & Son Quarry, Huntsville, Logan County, Ohio, USA
Dimensions: 3.0 x 4.6 x 6.2 cm

Description: Bright pyrite crystals to 0.5 cm nestled in a shallow cavity in gray dolostone. Small remnants of white calcite, which was etched to expose the pyrite, are present. The crystals exhibit the uncommon diploid habit.

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