Specimen Atlas graphic for Pyrite Sun, showing a radial disc-shaped pyrite specimen from the Conant Mine near Sparta, Illinois, with formation details and mineral data.

Pyrite Sun: Rare Radial Pyrite Formation from Illinois

Pyrite Sun is a radial pyrite formation characterized by its flattened, disc-like structure and naturally radiating crystal pattern. It formed within coal-bearing shale deposits of the Illinois Basin, where pressure between sedimentary layers compressed pyrite into thin, sunburst shapes. These specimens are distinct to this region and are recognized for their metallic luster and highly symmetrical growth.

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This specimen is part of the Mystic Parcel Curio Cabinet collection.

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