Nov 3 (Reuters) - Glencore Plc GLEN.L has agreed to sell
future silver output from its stake in the Antamina copper mine
in Peru to Silver Wheaton Minerals SLW.TO for $900 million in
cash in a so-called "streaming" deal, Silver Wheaton said on
Tuesday.
Vancouver-based Silver Wheaton will also make ongoing
payments of 20 percent of the spot price for silver for every
ounce of metal delivered.