GOLD * Gold for June delivery up $6.50 to $913.10 an ounce at 12:07 p.m. EDT (1607 GMT) on the COMEX division of New York Mercantile Exchange. * Ranged from $904.20 to $914.30 -- which marked its highest price since April 1. * China revealed on Friday that it had secretly raised its gold reserves by 75 percent since 2003, increasing its holdings to 1,054 tonnes and confirming years of speculation it had been buying. [ID:nN24389484] * Gold futures traded higher but did not rally further because the market had already anticipated increasing central banks' interest in the yellow metal - traders. * China's announcement indicated global monetary authorities, not just investment funds, are viewing gold with a stronger interest - Jeffrey Christian, managing director of CPM Group. * China's confirmation of its gold holdings was not surprising given the broad rise in all the country's reserves - John Lipsky, first deputy managing director of the International Monetary Fund. [ID:nN24389484] * The IMF last year approved the sale of 403 tonnes of gold from its stocks of 3,217 tonnes (103.4 million ounces) as part of a plan to put its finances on a sounder footing and create an endowment with the proceeds. * COMEX estimated 11 a.m. electronic futures volume at 51,073 lots. Floor volume was not available due to technical difficulties. * Spot gold traded at $911.20 an ounce, up 1.0 percent from its late Thursday quote in New York. * The London afternoon gold fix was $907.50 an ounce. SILVER * COMEX May silver up 12.0 cents at $12.875 an ounce, following gold's rally. * Ranged between $12.650 and $12.940. * COMEX estimated 11 a.m. electronic futures volume at 11,045 lots. * Spot silver was at $12.86 an ounce, up 0.9 percent from its previous finish. * The London silver fix at $12.780 an ounce. PLATINUM * NYMEX July platinum down $5.10 at $1,182.90 an ounce on profit-taking ahead of the weekend. * Spot platinum at $1,175.00 an ounce, down 0.3 percent from its late Thursday quote. PALLADIUM * June palladium up $3.25, or 1.4 percent, at $235.75 an ounce. * Spot palladium was at $233.00 an ounce, up 1.1 percent from its previous finish. COPPER * Benchmark COMEX copper for July delivery up 5.80 cents, or 2.9 percent, at $2.0490 a lb. * Session range from a near three-week low at $1.9550 to $2.0590. * COMEX estimated electronic futures volumes at 13,105 lots by 11 a.m. * COMEX copper futures up in band of consolidation from sharp losses this week that saw prices correct 11 percent - analysts. * Copper bounces on back of firmer equity values and dollar weakness - brokers. * Copper's upside momentum gathered pace after data showed the inventory of new U.S. homes for sale at the end of March plummeted at a record pace. [ID:nN23339402] * Copper inventories in warehouses monitored by the Shanghai Futures Exchange fell 34 percent to 15,051 tonnes from 22,705 tonnes a week ago. * London Metal Exchange (LME) copper stocks dropped 10,925 tonnes to 429,550 tonnes on Friday. * Canceled warrants stood at 65,800 tonnes on Thursday -- about 16 percent of total stocks -- from 69,175 tonnes the previous day. * COMEX copper stocks fell by 106 short tons to 47,565 short tons as of Thursday. * LME copper for three-months delivery closed up $128 at $4,470 a tonne.

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