Home / Explore / Minerals / Coombsite Minerals Coombsite coombsite K(Mn,Fe,Mg)13(Si,Al)18O42(OH)14 Coombsite Mineral Specimen For Sale — via www.dakotamatrix.com · Source Overview Coombsite is a mineral species (phyllosilicate mineral). Nickel–Strunz class: 9.EG.35. Scientific references Coombsite — Wikidata. https://www.wikidata.org/wiki/Q3689964 Link