* Gold not spared, sold off with other risk assets
* Margin calls may be playing a part
* Central bank buying to buoy sentiment
(Updates with graphic)
By Pratima Desai
LONDON, Nov 27 (Reuters) - Gold prices tumbled nearly 5 percent to a one-week low below $1,140 an ounce on Friday as investors fearing debt default in Dubai sought safety in dollars and cash.
Other precious metals also slipped. Silver <XAG=> hit a two-week low of $17.66 an ounce, while platinum <XPT=> and palladium <XPD=> touched one-week lows of $1,418.50 and $351 an ounce respectively. Spot gold <XAU=> briefly hit a low of $1,136.80 a troy ounce, the lowest since Nov. 16 and was bid at $1,161.55 an ounce at 1045 GMT from $1,192.60 on Thursday, when the precious metal hit $1,194.90 -- a record high.
"It's mainly driven by this news out of Dubai (which) has had a large impact on risk appetite and resulted in a sharply stronger dollar," said Daniel Major, a metals analyst at RBS Global Banking & Markets.
Dubai said on Wednesday two flagship firms planned to delay repaying billions of dollars in debt. State-backed Dubai World has $59 billion of liabilities -- a big chunk of the emirate's total debt of $80 billion. [
]That has raised the spectre of default and triggered a sell-off of risky assets such as commodities and stocks.
For graphic on risk assets click on http://graphics.thomsonreuters.com/ce-insight/RISK-ASSETS.pdf
Gold, a traditional safe haven, has also been sold because the higher dollar makes the precious metal more expensive for holders of other currencies. [
]"Gold has not been spared the carnage -- so much for its safe-haven status," said David Thurtell, analyst at Citi.
Many investors will also be selling gold, up more than 30 percent this year, to pay for losses elsewhere.
"Margin calls might be playing a part here, particularly for Middle Eastern investors," Thurtell said.
CENTRAL BANKS BUOY
But analysts say expectations of gold purchases by central banks in emerging markets will help buoy prices.
Earlier this week the International Monetary Fund said it had sold 10 tonnes of gold to the Central Bank of Sri Lanka, adding the sale was part of the 403.3 tonnes approved by its executive board in September. [
]The IMF has already sold 202 tonnes to the Reserve Bank of India and the Bank of Mauritius.
"The central bank story is the one that has driven gold higher not just the dollar story," Major said.
Earlier this week the IMF declined to comment on a newspaper report which suggested India could buy more gold from the fund. [
] [ ]Also driving gold are purchases by investors looking for a hedge against inflation that could be triggered by the vast amounts of money being pumped into the global economy by central banks and government around the world.
That can be seen in the world's largest gold-backed exchange-traded fund, SPDR Gold Trust <GLD>, holding 1,127.860 tonnes as of November 25 and within touching distance of the record 1,134.03 tonnes seen on June 1. [
]Spot silver was at $18.03 an ounce from $18.61 late in New York on Thursday, platinum at $1,434 an ounce from $1,452 and palladium at $357 an ounce from $368. (Editing by Sue Thomas)
((pratima.desai@thomsonreuters.com; +44 207 542 5113))