Platinum for October delivery was gaining $37.50 to $1,644.50 an ounce. The precious metal traded as high as $1,659.50 and as low as $1,603.50 an ounce.

Platinum has rallied since the middle of August after a Lonmin mine grabbed attention when South African police killed some 45 workers (according to the most recent death toll reports) who were staging an illegal strike.

Gold mining stocks were mixed on Wednesday. Shares of Goldcorp ( GG) were rising 2%, while shares of NovaGold Resources ( NG) were adding 1.7%. Gold Fields ( GFI) was one of the sector's biggest losers as shares of the mining company shed 2.8%.

-- Written by Joe Deaux in New York.

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