* Gold at six-month high in euro terms on flight to safety
* U.S., European stock markets tumble on investor worries
* Platinum, palladium, silver track gold higher
(Adds comment, updates prices)
By Jan Harvey
LONDON, Oct 6 (Reuters) - Gold prices rose nearly 5 percent on Monday, leading other precious metals higher, as a slide in stock markets sparked a flight to safety.
In euro terms, the metal reached 645.33 euros an ounce, its strongest since late March, when it hit a record high of 651.54.
Traders largely shrugged off the effects of a firmer dollar and weaker oil prices -- usually the main external drivers of gold -- which should have pressured the metal lower. Platinum, silver and palladium all posted gains in gold's wake.
Spot gold <XAU=> was quoted at $873.50/875.50 an ounce at 1413 GMT, up from $834.80 in late New York trade on Friday.
"There is a flight to gold as a safe haven again today, which is supporting prices," said Dresdner Kleinwort consultant Peter Fertig.
"The factors which normally drive gold are heading lower, except the stock markets, and the rising risk aversion of investors."
U.S. stocks slid at the open, reflecting losses on European markets earlier in the session, as the widening fallout from the credit crisis spooked investors. [
]Losses on the equity markets typically spur buying of alternative assets, such as bullion.
The precious metal also benefited from strong demand from smaller investors for investment coins and bars.
"We feel extremely positive on gold prices as investors rush to buy gold coins as protection against further market volatility," said Fairfax analyst John Meyer.
"Gold seems so much more tangible an investment than many other instruments and is not vulnerable to rising supply," he added. "(And) gold looks good in an inflationary environment."
Gold largely shrugged off dollar strength. The U.S. currency hit a 13-month high against the euro as investors worried about the outlook for European banks after leaders decided against a common bank bailout plan over the weekend. [
]The other main external driver of gold, oil, also weighed on bullion prices. U.S. crude futures slipped to an eight-month low below $90 a barrel as traders worried efforts to avert further financial turmoil would not stem falling demand. [
]Gold usually moves in tandem with crude, as it is often bought as a hedge against oil-led inflation.
FIRM DEMAND
Prices are being supported by interest in bullion-backed exchange traded funds. The two main gold and silver ETFs remain near record levels, despite recent outflows.
Holdings of the SPDR Gold Trust <GLD>, the world's largest gold-backed ETF, eased 2 percent from last week's record highs on Friday, according to the fund. [
]The amount of metal held to back the largest silver ETF has also slipped from record levels. The iShares Silver Trust <SLV.A> said its holdings eased 3/4 of a percent or just over 50 tonnes week-on-week to 6,849.50 tonnes on Friday.
Silver ETFs have proved popular in recent months as lower silver prices attract more retail investors to the market.
Spot silver <XAG=> was quoted at $11.27/11.37, up from $11.09 in late New York trade on Friday.
Among other precious metals, platinum <XPT=> tracked gold higher, rallying more than 3 percent to $984.50/1,004.50 an ounce from $950. Palladium <XPD=> climbed to $197/207 an ounce from $194.
(Reporting by Jan Harvey; editing by Christopher Johnson)