August 24, 2010 Polymetallic Massive Sulphide deposits at the Sea Floor and their Resource Potential. Edit Delete Tags Autopost Click here to download: Polymetallic Massive Sulphide deposits at the Sea Floor and their Resource Potential.pdf (491 KB) (download) Click here to download: Polymetallic Massive Sulphide deposits at the Sea Floor and their Resource Potential.pdf (491 KB)