This special issue on "Alteration Associated with the Spectrum of Volcanic-Hosted Massive Sulfide Deposits and Its Exploration Significance" largely reports the results of a three-year (1995–1998) collaborative research project (P439) between the Centre for Ore Deposit Research at the University of Tasmania and the Australian Mineral Industry Research Association (AMIRA). Volcanic-hosted massive sulfide deposits (VHMS) provide a significant contribution to world zinc, copper, lead, silver, and gold production. Some Australian deposits have been very profitably mined because of their particularly high polymetallic grades, high precious metal values, and large size. For example, Rosebery, Que River, and Hellyer were mainstays of...

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