Home / Explore / Minerals / Kolovratite Minerals Kolovratite kolovratite NixZny(VO4)0.67(x+y) * nH2O Kolovratite Mineral Specimen For Sale — via www.dakotamatrix.com · Source Overview Kolovratite is a mineral species (questionable hydrous vanadate mineral). Nickel–Strunz class: 8.CB.50. Scientific references Kolovratite — Wikidata. https://www.wikidata.org/wiki/Q3816267 Link