Home / Explore / Minerals / Modraite Minerals Modraite modraite Ca19Fe²⁺(Al11Fe²⁺)(SiO4)10(Si2O7)4O(OH)9 Mineralatlas Lexikon - Modraite (english Version) — via www.mineralienatlas.de · Source Overview Modraite is a mineral species. It crystallises in the tetragonal system. Nickel–Strunz class: 9.BG.35. Scientific references Modraite — Wikidata. https://www.wikidata.org/wiki/Q127419596 Link