Home / Explore / Minerals / Eggletonite Minerals Eggletonite eggletonite (Na,K,Ca)2(Mn,Fe)8(Si,Al)12O29(OH)7·nH2O Eggletonite Mineral Specimen For Sale — via www.dakotamatrix.com · Source Overview Eggletonite is a mineral species (phyllosilicate mineral). Nickel–Strunz class: 9.EG.30. Scientific references Eggletonite — Wikidata. https://www.wikidata.org/wiki/Q3720326 Link