* U.S. initial jobless claims rise by more than expected
* Gold's initial rally fizzles as stock losses deepen
* Coming up: Chicago Fed index due Monday
(Recasts, updates prices, adds comments, second byline/dateline)
By Frank Tang and Jan Harvey
NEW YORL/LONDON, Aug 19 (Reuters) - Gold prices trimmed gains but stayed higher on Thursday, as investors raised cash to cover equity-market losses after an initial rally driven by disappointing U.S. jobless claims data fizzled.
Silver and platinum group metals weakened after data showed new claims for U.S. unemployment benefits unexpectedly climbed to a nine-month high last week, and as the Philadelphia Federal Reserve Bank said regional factory activity unexpectedly contracted in August. [
]Bruce Dunn, vice president of trading at New Jersey-based Auramet Trading, said that bullion's early gains were driven by technical buying, but light trading volume suggested it did not take many buyers for prices to rally.
"And the Philly Fed came out weaker than expected, pressuring all the industrial metals. The gold bulls became panicked and squared positions as the European trading ended," Dunn said.
Gold initially jumped on the data in a flight to quality, but the rally faded as losses in U.S. stocks deepened, prompting investors to sell gold to cover margin calls as stock prices accelerated losses. S&P 500 index dropped about 2 percent.
Spot gold <XAU=> was at $1,232.15 an ounce at 12:44 p.m. EDT (1644 GMT), against $1,227.55 late in New York on Wednesday. U.S. gold futures for December delivery <GCZ0> rose $2.70 to $1,234.10.
Turnover in COMEX gold futures remained quiet in the summer months, near a one-year low set on Tuesday, preliminary Reuters data showed.
The metal is on track to extend a rally to a sixth day on strong physical demand, which tends to rise in August as jewelers stockpile inventory ahead of the start of top consumer India's wedding season.
The weak jobs data fueled interest in the metal as a safe haven from economic uncertainty in earlier trade, analysts said.
"The latest economic data have disappointed, raising concerns once again about the solidity of the recovery," said Anne-Laure Tremblay, an analyst at BNP Paribas. "This uncertainty in turn supports the gold price."
The dollar was lower against a basket of currencies in the wake of the data, which showed initial state jobless benefit claims rose to a nine-month high last week. The U.S. dollar later turned higher.
Concerns over the prospect of sluggish growth have raised investors' appetite for bullion as a haven from uncertainty in the wider markets. This has been reflected in a rise in holdings of the world's largest gold exchange-traded fund.
ETF HOLDINGS RISE
New York's SPDR Gold Trust <GLD> said its holdings on Wednesday rose just under 1 tonne to 1,295.516 tonnes, their highest since July 27. [
]ETF Securities, a London-based provider of exchange-traded products backed by precious metals, meanwhile said in a weekly report that inflows into its physically backed gold products had hit a 13-week high.
The technical outlook for gold is also looking more positive after the metal's recent gains, analysts said, although strong pockets of resistance remain.
"Having broken through daily cloud resistance earlier in the week, a retracement level at $1,242 could be tough to break in the near term," said Barclays Capital in a note.
Among other precious metals, silver <XAG=> was at $18.30 an ounce against $18.32, platinum <XPT=> was at $1,521.35 an ounce versus $1,527 and palladium <XPD=> at $484.05 versus $486.50.
The ratio of platinum to gold -- or how many ounces of gold were needed to buy an ounce of platinum -- fell to a 1-1/2 month low at 1.24 on Thursday, as the yellow metal's rise made it comparatively more expensive. Prices at 12:40 p.m. EDT (1640 GMT)
LAST NET PCT YTD
CHG CHG CHG US gold <GCZ0> 1234.70 3.30 0.3% 12.6% US silver <SIU0> 18.335 -0.064 -0.4% 8.8% US platinum <PLV0> 1528.20 -8.30 -0.5% 3.9% US palladium <PAU0> 487.95 -2.45 -0.5% 19.3% Gold <XAU=> 1232.45 5.00 0.4% 12.4% Silver <XAG=> 18.29 -0.03 -0.2% 8.6% Platinum <XPT=> 1521.10 -5.90 -0.4% 3.8% Palladium <XPD=> 484.10 -2.40 -0.5% 19.4% Gold Fix <XAUFIX=> 1233.50 5.50 0.4% 11.7% Silver Fix <XAGFIX=> 18.45 9.00 0.5% 8.6% Platinum Fix <XPTFIX=> 1540.00 4.00 0.3% 5.0% Palladium Fix <XPDFIX=> 494.00 5.00 1.0% 22.9% (Reporting by Frank Tang in New York and Jan Harvey in London; Editing by Marguerita Choy)