* Dollar retreats as traders anticipate ECB rate hike * Oil prices climb on Mideast, North Africa unrest
* Silver extends gains to fresh 31-year high
(Updates prices, adds comment)
By Jan Harvey
LONDON, April 4 (Reuters) - Gold rose back above $1,430 an ounce on Monday as oil prices climbed and the dollar eased, and as traders anticipate a rate hike from the European Central Bank may lead to further weakness in the U.S. currency.
Rising interest rates are generally negative for gold, as they raise the opportunity cost of holding non-yielding assets, but real rates are expected to remain depressed by rising inflation.
Spot gold <XAU=> was bid at $1,434.60 an ounce at 1321 GMT, against $1,427.98 late in New York on Friday. U.S. gold futures for April delivery <GCJ1> rose $7.30 an ounce to $1,435.40.
Gold is also benefiting from concerns some smaller euro zone economies such as Portugal and Ireland will continue to struggle with sovereign debt, especially if the ECB presses ahead with a rate hike, and from unrest in the Middle East and North Africa.
"There are all sorts of drivers supporting gold at the moment," said David Wilson, an analyst at Societe Generale. "There are some risk-supporting issues -- the debt situation, the continuing Middle East situation."
The euro meanwhile hit a fresh five-month peak against the dollar on Monday with markets all but certain the European Central Bank will raise interest rates later this week. [
]This is helping the single currency shrug off concerns over sovereign risk. Rating agency Fitch cut Portugal's credit ratings by three notches to BBB- late on Friday, one notch above junk, and signalling further downgrades are likely.
In contrast, one of the Federal Reserve's most powerful policymakers on Friday countered recent hawkish rhetoric from some other Fed officials worried about inflation, saying he saw no need for the central bank to reverse course.
OPINION SPLIT
William Dudley, president of the New York Federal Reserve Bank, said the Fed was "still very far away" from achieving its mandate of maximum sustainable employment and price stability, although the economy is on a firmer footing. [
]"Dudley's comments Friday underlined the lack of consensus on the FOMC. This policy divide is gold-positive," said UBS analyst Edel Tully in a note.
"Another flood of Fed views this week - Chairman Bernanke and Chicago Fed President Evans (voter) speak today, as does non-voter Lockhart; tomorrow brings voters Plosser and Kocherlakota and the FOMC minutes, Wednesday Lockhard again, Thursday non-voters Pianalto and Lacker - should give further insight into where the balance of FOMC opinion resides."
"This, and Thursday's widely expected ECB rate hike, will be gold's main drivers over the coming days."
Meanwhile, data released by the U.S. Commodity Futures Trading Commission showed speculators in gold futures and options raised their net long positions as prices rose to fresh records last week. [
]Rising oil prices also helped support gold. U.S. oil climbed and North Sea Brent crude futures <LCOc1> rose more than $1 per barrel to above $119.70 on concerns over oil supply as unrest continued across North Africa and the Middle East. [
] Among other precious metals, silver <XAG=> climbed to its highest in 31 years at $38.58 an ounce, lifted by gold's gains and expectations the economic recovery would benefit industrial commodities. It was later at $38.47 an ounce against $37.74.Among other precious metals, platinum <XPT=> was at $1,778.74 an ounce against $1,765, while palladium <XPD=> was at $781.97 against $769.95. (Reporting by Jan Harvey; editing by Alison Birrane and Keiron Henderson)