Marcasite Nodule

Marcasite Nodule

Marcasite nodules, also known as marcasite suns or pyrite suns, are found in sedimentary rocks such as shale and limestone. They originate from formations known as concretions, which are created through the accumulation of mineral matter over time. These nodules typically have a radial structure, resembling a sunburst or flower, with fine crystals radiating outward from a central point. The color of marcasite nodules can vary, ranging from pale yellow to brassy gold, depending on the presence of impurities and oxidation. They are prized by collectors for their intricate patterns and unique natural formations.