* Quantitative easing seen "not if, but when" * Dollar slides to 8-month low against currency basket
* Silver hits 30-yr high; ratio to gold lowest in 11 months
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By Jan Harvey
LONDON, Sept 30 (Reuters) - Gold rose to a record high in Europe on Thursday and was on track for an eighth consecutive quarterly gain as the dollar fell amid concerns over the prospect of further U.S. quantitative easing.
Strength in gold prices also helped lift silver to its highest level since 1980, palladium to a 2-1/2 year high and platinum to its strongest since May.
Spot gold <XAU=> reached $1,314.85 an ounce and was bid at $1,314.50 at 1018 GMT, against $1,308.80 late on Wednesday. U.S. gold futures for December delivery <GCZ0> also hit a record $1,316.20 an ounce and were later up $5.50 to $1,315.80.
The precious metals are poised to build on their current rally ahead of further action from the U.S. authorities to bolster growth, analysts said.
"With quantitative easing, it is probably no longer a question of if, but when," said Daniel Briesemann, an analyst at Commerzbank.
"The other thing in the mind of investors is that there might be a war (of) currency devaulations in some of the main world currencies like the dollar, yen, and so on," he said. "That is supportive for gold as well."
The dollar fell to its lowest in five months against the euro <EUR=> and an eight-month trough versus a basket of six major currencies <.DXY>, weakened by concern that attempts by U.S. authorities to support growth could undermine the U.S. unit.
The dollar is on track for its biggest quarterly drop since the second quarter of 2002 against a basket of six other currencies, down 8.4 percent. The euro is up 11.3 percent, also its best performance since 2002. [
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"The apparent resilience of the euro to bad news is testament to the all-pervasive role of Fed considerations in driving forex," said Credit Agricole in a note.
"The euro is acting as the flipside to dollar malaise, with the printing presses looming, (while) the shallow retreats in EUR/USD underline the appetite to take things higher," it added.
FACTORS
Traditionally dollar weakness has benefited gold as strength in the U.S. unit lifts gold's appeal as an alternative asset and makes dollar-priced commodities cheaper for holders of other currencies. But support for gold has broadened.
UBS analyst Edel Tully said in a note: "This safe-haven demand does not have a single cause, but rather is driven by an interplay between related worries about quantitative easing, excessive debt, asset diversification, currency debasement generally and dollar weakness specifically."
On the physical markets, dealers in major Asian gold consumers reported only light scrap sales despite record highs prices. "Clients are afraid gold will move higher again," said a physical dealer in Singapore.
Among other precious metals, silver <XAG=> hit a fresh 30-year high at $22.02 an ounce, and was later at $21.98 an ounce against $21.87, on track for its biggest monthly gain since May 2009.
The metal has climbed on the back of rising gold prices, but continues to outperform its yellow rival. The gold-silver ratio -- how many ounces of silver are needed to buy an ounce of gold -- fell to 59.7 on Thursday, its lowest since last October.
Holdings of the world's largest silver-backed exchange-traded fund, the iShares Silver Trust <SLV>, rose to a record 9,786.47 tonnes by Wednesday, the trust said, showing healthy investment appetite for the metal. [
]Elsewhere platinum <XPT=> hit a four-month high at $1,659.50 an ounce and was later at $1,654.50 against $1,645.75, while palladium <XPD=> was at $570.50 against $563.45, having earlier touched its highest since March 2008 at $572 an ounce. (Reporting by Jan Harvey; Editing by Alison Birrane)