Home / Explore / Minerals / Cryptochalcite Minerals Cryptochalcite cryptochalcite K2Cu5O(SO4)5 Cryptochalcite: Mineral information, data and localities. — via www.mindat.org · Source Overview Cryptochalcite is a mineral species (oxosulfate mineral). It crystallises in the triclinic system. Scientific references Cryptochalcite — Wikidata. https://www.wikidata.org/wiki/Q20871378 Link