The GSI, as partner and Work Package 7 Minerals leader of EMODnet Geology Phase II, are compiling information on Polymetallic sulphides PMS. EMODnet partners are submitting mapped PMS locations and existing information, here you can view data collated thus far. The PMS information presented here are of mapped PMS locations. Also known as Volcanogenic Massive Sulfides (VMS), Seafloor Massive Sulfides (SMS) and Black Smokers, PMS are base metal sulfur-rich mineral deposits. They occur along the earth's major tectonic belts at spreading centres, as well as in intraplate regions where islands and seamounts are formed.