Home / Explore / Minerals / Karchevskyite Minerals Karchevskyite karchevskyite Mg18Al9(OH)54Sr2(CO3)9(H2O)6(H3O)5 Karchevskyite Mineral Specimen For Sale — via www.dakotamatrix.com · Source Overview Karchevskyite is a mineral species (hydrotalcite supergroup mineral). It crystallises in the trigonal system. Scientific references Karchevskyite — Wikidata. https://www.wikidata.org/wiki/Q19860875 Link