Home / Explore / Minerals / Haydeeite Minerals Haydeeite haydeeite Cu3Mg(OH)6Cl2 Haydeeite archived mineral specimens — via www.dakotamatrix.com · Source Overview Haydeeite is a mineral species (halide mineral). It crystallises in the trigonal system. Nickel–Strunz class: 3.DA.10c. Scientific references Haydeeite — Wikidata. https://www.wikidata.org/wiki/Q19841415 Link