BUZZ-Metal stocks: Gold at 9-month, silver at 4-year lows
** Gold and silver stocks down 3-6 pct
** Spot gold weakest since early January, silver down to a four-year low
** Precious metal prices pressurized by speculation that U.S. Federal Reserve will start its rate-tightening cycle sooner than expected
** Up to Friday's close, gold prices down 5.5 pct, silver down nearly 9 pct this month as U.S. stocks rallied to record highs and the dollar index hit a four-year peak
** Shares of Iamgold Corp down 6.2 pct, Endeavour Silver Corp 5.9 pct, Aurico Gold Inc 3.9 pct, Eldorado Gold Corp 3.8 pct, Newmont Mining Corp down 2.6 pct
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