By Rafael Nam
HONG KONG, March 20 (Reuters) - Gold prices slumped more than 2 percent to their lowest in a month and oil dropped as doubts about the global economy continued to unnerve commodity asset classes that had soared to record highs as early as this week.
Asian resource and mining stocks fell, while renewed credit crisis fears also dragged down indexes across the region just one day after investors had cheered hefty U.S. interest rate cuts and resilient results from leading U.S. investment banks.
European shares were expected to fall, with major indexes seen down around 1.6 percent to 2.1 percent.
But the dollar gained against the euro after some initial volatility on the back of the decline in commodity prices, though volumes were reduced as markets in Japan were closed for a public holiday.
"We're seeing a return to reality with regard to the situation in the U.S.," said Savanth Sebastian, equities economist at CommSec in Australia.
"The trend in the U.S. remains the same, credit markets remain tight and possible writedowns can continue."
Gold <XAU=> tumbled more than 2 percent to as low as $920.30 an ounce, its lowest since Feb. 20., after prices had already slumped 6 percent on Wednesday in its biggest one-day percentage drop in nearly two years. Bullion last traded at $936.60.
That marked a severe retreat from a record $1,030.80 an ounce hit on Monday, though prices are still up some 12 percent so far this year.
Other metal prices from platinum to copper to silver also came under heavy pressure amid concerns that a U.S.-led economic slowdown could undermine global demand.
"I think we will probably see further falls in commodity prices," said analyst Cai Luoyi at China International Futures.
"It is obvious that investors who cut their holdings due to concerns on the U.S. economy are not likely to build up long positions again in the near term."
Oil prices extended the prior day's slump into Asian trade as well, with U.S. crude futures <CLc1> down 38 cents to $102.19 a barrel, retreating sharply from a record $111.80 hit on Monday.
Commodity prices have soared this year as demand outpaced supply, while a slumping dollar also lifted prices as it makes purchases less expensive when done through other currencies.
STOCKS EXTEND SLUMP
The MSCI's measure of Asian stocks outside Japan <.MIAPJ0000PUS> fell 1.9 percent by 0620 GMT.
Concerns about a financial credit crisis returned after Merrill Lynch <MER.N> said on Wednesday it sued a U.S. bond insurer to stop it from backing out of credit guarantees, fuelling speculation the U.S. investment bank may need to take further write-downs. [
]Asian stocks have had a volatile week that started with worries about more casualties following the fire sale of Bear Stearns <BSC.N> to JPMorgan & Chase <JPM.N>.
But markets perked up mid-week following the U.S. Federal Reserve's rate cut and better-than-expected results from Goldman Sachs <GS.N> and Lehman Brothers <LEH.N>.
Shares in Australia <
> and Hong Kong < > dropped more than 3 percent each on Thursday as resource firms such as BHP Billiton <BHP.AX>, the world's biggest miner, and Petrochina <0857.HK>, the world's most valuable energy producer, slumped.Shares in Singapore <.FTSTI> edged lower, though markets in China <
> gained 1.5 percent, in a technical recovery from recent sharp losses.Taiwan shares <
> gained 1.9 percent amid hopes of better ties with China after the country elects a new president on Saturday, while South Korean shares < > ended flat, erasing earlier losses as the slumping won currency <KRW=> lifted exporters.The falls in commodity prices helped lift the dollar after initial weakness earlier in the session, with the U.S .currency reaching $1.5566 per euro <EUR=> up slightly from late U.S. trade, and still off its recent record low against major currencies.