HYDROXYLELLESTADITE METASOMATITES FROM THE GUMESHEV SKARN PORPHYRY COPPER DEPOSIT, MIDDLE URALS

Abstract

On the Gumeshevsk deposit a massive metasomatite body is discovered, formed primarily by hydroxylellestadite. Thus the completing member of ellestadite mineral group is established (containing only 0.12% P2O5). Metasomatites were formed in the period of hysterogenic decomposition of skarns in marble or andradite-wollastonite skarn to pyrite-chalcopirite mineralization development. These metasomatites can be separated as individual type.