Phosphorescence

Continued emission of light after the ultraviolet source is removed — the afterglow. Some calcite, willemite and sphalerite phosphoresce; most fluorescent minerals do not.

Sources

Earle, S. (2019). Physical Geology, 2nd ed., Chapter 2: Minerals (CC BY 4.0)
Mindat — Mineralogical glossary (link only)

Cite this article

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

BibTeX · CSL-JSON

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

Citations carry the pack version and the article's as-of date so they resolve to the same text later. The facts themselves belong to the sources listed below; cite those for the science.