Home / Explore / Minerals / Kottenheimite Minerals Kottenheimite kottenheimite Ca3Si(SO4)2(OH)6·12H2O Kottenheimite Mineral Specimen For Sale — via www.dakotamatrix.com · Source Overview Kottenheimite is a mineral species (sulfate mineral). It crystallises in the hexagonal system. Scientific references Kottenheimite — Wikidata. https://www.wikidata.org/wiki/Q19860912 Link