Septarian has formed around 50 to 70 million years ago during Earth’s Cretaceous Period when dead sea life had been attracted to molten sediment from volcanic eruptions. Over time as sea life began to die, their chemical composition became enriched in sedimentary rock, forming the nodules we see today. The chemicals within the dead sea life eventually crystallized and formed Aragonite and Calcite crystals.
Chemical Formula: (CaCO3) + (CaMg(CO3)2
***NOTE TO BUYER***
This is a "random selection" listing. You will NOT receive the exact item photographed in the listing, but one that is very similar. However, due to the unique nature of each mineral, the size, shape, and color may vary slightly.
Please reference secondary photos for examples of variations within the product. If you have certain specification requirements, please reach out via email.