Home / Explore / Minerals / Poppiite Minerals Poppiite poppiite Ca2V³⁺V³⁺2(Si2O7)(SiO4)(OH,O)2·H2O Poppiite Mineral Specimen For Sale — via www.dakotamatrix.com · Source Overview Poppiite is a mineral species (sorosilicate mineral). It crystallises in the monoclinic system. Nickel–Strunz class: 9.BG.20. Scientific references Poppiite — Wikidata. https://www.wikidata.org/wiki/Q19861202 Link