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Glossary · Minerals

Septarian

A concretion cracked internally by shrinkage and then filled with mineral veins (usually calcite, sometimes barite or aragonite) that form a pattern of polygons; cut and polished as “septarian nodules” and “dragon stone”.

A concretion cracked internally by shrinkage and then filled with mineral veins (usually calcite, sometimes barite or aragonite) that form a pattern of polygons; cut and polished as “septarian nodules” and “dragon stone”.

Sources

Cite this article

Stratum Strata. "Septarian" (Glossary). Stratum Strata pack 2026.09, as of 2026-09-16. https://stratum.black/strata/glossary/septarian. Accessed 2026-09-21.

BibTeX · CSL-JSON

@misc{stratum-septarian,
  title        = {Septarian},
  author       = {{Stratum Strata}},
  howpublished = {\url{https://stratum.black/strata/glossary/septarian}},
  year         = {2026},
  note         = {Glossary article, Stratum Strata pack 2026.09, as of 2026-09-16; sources: stratum. Accessed 2026-09-21.}
}

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