Home / Explore / Minerals / Holtedahlite Minerals Holtedahlite holtedahlite Holtedahlite Mineral Specimen For Sale — via www.dakotamatrix.com · Source Overview Holtedahlite is a mineral species (phosphate mineral). Nickel–Strunz class: 8.BB.20. Scientific references Holtedahlite — Wikidata. https://www.wikidata.org/wiki/Q3786367 Link