Stratum.black

Glossary · Curation

Pyrite decay

Oxidation of pyrite and marcasite in humid air to iron sulphates and sulphuric acid, cracking the specimen and attacking labels and neighbours; controlled only by dry storage (below about 30–45 % RH).

Oxidation of pyrite and marcasite in humid air to iron sulphates and sulphuric acid, cracking the specimen and attacking labels and neighbours; controlled only by dry storage (below about 30–45 % RH).

Sources

Cite this article

Stratum Study. "Pyrite decay" (Glossary). Stratum Study pack 2026.09, as of 2026-09-16. https://stratum.black/study/glossary/pyrite-decay-term. Accessed 2026-09-20.

BibTeX · CSL-JSON

@misc{stratum-pyrite-decay-term,
  title        = {Pyrite decay},
  author       = {{Stratum Study}},
  howpublished = {\url{https://stratum.black/study/glossary/pyrite-decay-term}},
  year         = {2026},
  note         = {Glossary article, Stratum Study pack 2026.09, as of 2026-09-16; sources: stratum. Accessed 2026-09-20.}
}

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.

Sources for this article: Stratum editorial (Stratum editorial). As of 2026-09-16; Study pack 2026.09. Written by Stratum in our own words; the works cited are where the science lives, and none of their text is reproduced here.

Found an error? Write to drew@tyr.ac with the article id glossary:pyrite-decay-term.