* Dollar slides to 5-month low vs basket of currencies
* Oil firm near 6-month high above $61l
* Silver hits nine-month high, tracking gains in gold
(Adds fresh highs in gold/silver, adds comment)
By Jan Harvey
LONDON, May 22 (Reuters) - Gold climbed to a fresh two-month high of $957.50 an ounce in Europe on Friday, extending the previous session's near 2 percent gains, as investors bought the metal as a hedge against dollar weakness.
Silver prices posted the biggest gains among precious metals, however, climbing to a nine-month peak of $14.79 as investors turned to the metal as a cheaper alternative to gold.
Spot gold <XAU=> was bid at $956.95 an ounce at 1207 GMT, against $953.40 an ounce late in New York on Thursday. U.S. gold futures for June delivery <GCM9> on the COMEX division of the New York Mercantile Exchange rose $6.20 to $957.40 an ounce.
Simon Weeks, director of precious metals at the Bank of Nova Scotia, said the majority of gold's gains were dollar-related, with investors "buying hard assets as opposed to hard currency".
"Physical (buying) has been okay, but I expect a big increase in the open interest on the long side on the COMEX," he added.
The dollar continued its slide on Friday, reaching a five month trough against a basket of currencies as fears over U.S. sovereign ratings accelerated a drive away from the unit. [
]Ratings agency Moody's Investor Services said on Thursday it was comfortable with its U.S. rating but that it was not guaranteed forever, while Standard & Poor's cut its outlook on Great Britain to negative from stable. [
]Fears over the economic outlook and the financial system fuelling interest in gold as a haven from risk. [
]Bullion is also technically well-positioned to make further gains, according to Calyon metals analyst Robin Bhar.
"We have closed for two days above the $935 level, so the technical guys will be saying we now have confirmation of a successful upside break," he said.
"We've seen in the past gold has put in some false starts and never really achieved a clean break-out. If we close at these sorts of levels, it will look really good on the weekly charts, and provide even more upside potential."
Stronger oil prices, which hovered around their six-month peak, also supported gold. Bullion can be bought as a hedge against oil-led inflation, while rising crude prices can also boost interest in commodities as an asset class. [
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OUTFLOWS
Investor interest in gold-backed exchange-traded funds remained relatively lacklustre, however. Holdings of the largest gold-backed ETF, the SPDR Gold Trust <GLD>, were unchanged for a sixth consecutive session on Thursday.
London's ETF Securities noted an outflow from their Physical Gold ETF <PHAG.L>. Its holdings declined nearly 69,000 ounces or 2.5 percent on Thursday.
Among other precious metals, silver <XAG=> jumped to a fresh nine-month high on Friday, also benefiting from dollar weakness. The metal has risen 5.7 percent so far this week. Spot silver <XAG=> was bid at $14.72 an ounce against $14.51.
Strong ETF buying has been a key factor boosting silver prices in recent weeks. ETF Securities' silver <PHAG.L> holdings were at a record 19.462 million ounces on Thursday.
"We expect the metal to continue to benefit from inflation fears and investor diversification, and think silver is brewing for an upside push of its own, potentially targeting the $16.40 level," said TheBullionDesk.com analyst James Moore in a note.
Platinum <XPT=> was quoted at $1,146 an ounce against $1,148.50 late on Thursday, while palladium <XPD=> was at $233 an ounce against $231.
Fellow platinum group metal rhodium dipped $50 to $1,400 an ounce, giving up some of this week's earlier gains.
(Reporting by Jan Harvey; Editing by William Hardy)