Home / Explore / Minerals / Jahnsite-(Mnmnzn) Minerals Jahnsite-(Mnmnzn) jahnsite-(MnMnZn) Mn²⁺Mn²⁺Zn2Fe³⁺2(PO4)4(OH)2(H2O)8 Pedro Alves / CC BY 3.0, via Wikimedia Commons · CC BY 3.0 · Source Overview Jahnsite-(Mnmnzn) is a mineral species (phosphate mineral). It crystallises in the monoclinic system. Scientific references Jahnsite-(Mnmnzn) — Wikidata. https://www.wikidata.org/wiki/Q55861852 Link