Home / Explore / Minerals / Hellandite-(Ce) Minerals Hellandite-(Ce) hellandite-(Ce) (Ca,REE)4Ce2Al☐2(B4Si4O22) (OH)2 Hellandite-(Ce): Mineral information, data and localities. — via www.mindat.org · Source Overview Hellandite-(Ce) is a mineral species (single chain inosilicate mineral). Nickel–Strunz class: 9.DK.20. Scientific references Hellandite-(Ce) — Wikidata. https://www.wikidata.org/wiki/Q3784629 Link