BUZZ-Gold, silver miners: Gold touches 12-week high
** U.S.-listed shares of gold, silver miners rise after gold climbs to a 12-week high before retreating
** Concerns over market volatility keep the market in positive territory
** Spot gold was up 0.4 percent at $1,111.96/ounce at 1445 GMT; U.S. gold futures for February delivery were up 0.6 percent at $1,112.40
** Shares of Barrick Gold Corp, the world's biggest gold producer, rise 1.5 pct; Newmont Mining Corp 5.3 pct; Goldcorp Inc 4.8 pct; Gold Fields Ltd 7.4 pct
** Shares of Silver Wheaton Corp rise 3.7 pct; Silver Standard Resources Inc 2.5 pct
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