Eclectic Elegance in Picacho Hills Part I Closed (#17577576)

Fossilized Septarian Nodules

Fossilized septarian nodules, which are unique geological formations characterized by their distinctive pattern of cracks or septaria. The nodules formed millions of years ago during the Cretaceous period, approximately 50 to 70 million years ago, through a process involving the precipitation of minerals in sedimentary rock.

• Composition: Septarian nodules are typically composed of a combination of calcite, aragonite, and other minerals that fill the cracks within the nodule.
• Appearance: These specimens display the characteristic septarian pattern, with well-defined veins of calcite or aragonite running through the host rock. The polished surfaces reveal the intricate internal structure, showcasing layers of mineral deposits in varying colors.
• Formation: Septarian nodules form in sedimentary environments, often in marine settings, where mineral-rich water percolates through cracks in the sediment. Over time, the minerals precipitate out of the water, filling the cracks and creating the unique septarian pattern.

Size:

• Weight: 1 lb 4 oz
• Dimensions:
  • Specimen 1: 4.5" x 3" x 1"
  • Specimen 2: 4.5" x 2.75" x 1"
• Scale: Soup can included for size reference