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Septarian Nodule Fossil Pairs EXTRA LARGE
Approx Size: 3.5-5 inches
These nodules are formed when cracks or fissures in the sedimentary rocks become filled with mineral-rich fluids over time. As these fluids evaporate or react with the surrounding rock, the minerals precipitate out and accumulate, forming distinctive patterns and structures.
You will receive a specimen (matching halves) that looks similar to the ones in the photos.