* FTSEurofirst falls 0.2 pct, on track for monthly gain
* Miners weaker as metal prices fall
* For up-to-the-minute market news, click on [
]
By Brian Gorman
LONDON, Oct 29 (Reuters) - European shares fell slightly early on Friday with miners weaker on lower metals prices and traders cautious ahead of third-quarter U.S. GDP data and the Federal Reserve's statement on quantitative easing next week.
At 0825 GMT, the FTSEurofirst 300 <
> index of top European shares was down 0.2 percent at 1,083.24 points, after rising 0.4 percent in the previous session.The index is on course for a gain of more than 2 percent for the month of October.
Metals prices fell, as the dollar strengthened. Miners to fall included Antofagasta <ANTO.L>, Anglo American <AAL.L>, Rio Tinto <RIO.L> and Xstrata <XTA.L>, down between 1.3 and 2.2 percent.
Later in the session, investors' focus will turn to third-quarter U.S. gross domestic product (GDP) data, for an indication of the strength of the recovery in the world's biggest economy, a factor the Fed will take into account in making a decision next week on further fiscal stimulus.
"There is uncertainty ahead of the Fed statement for sure," said Bernard McAlinden, investment strategist at NCB Stockbrokers in Dublin.
"There's a feeling the market maybe has over-priced in QE (quantitative easing). You've had half-decent data in the United States. I think the Fed will announce QE. It's a question of how much and the nature of what they do."
He added that political uncertainty, ahead of next week's U.S. mid-term elections, was also keeping some investors on the sidelines.
Energy companies rose as crude prices <Clc1> remained relatively high, despite some profit-taking on Friday. Prices in October traded mostly between $80 and $85, up from between $72 and $80 in September. U.S. oil demand was stronger in August than previously estimated, the U.S. Energy Information Administration said on Thursday. [
]BP <BP.L>, Royal Dutch Shell <RDSa.AS> and BG <BG.L> rose between 0.7 and 0.9 percent while Total was 0.1 percent lower after third-quarter earnings. [
]Across Europe, Britain's FTSE 100 <
>, Germany's DAX < > and France's CAC40 < > fell between 0.1 and 0.2 percent.
SANDVIK FALLS
Sandvik <SAND.ST> fell 5.7 percent after the tool and machinery maker reported a smaller-than-expected rise in third-quarter earnings, blaming adverse currency swings, while order bookings also just lagged expectations.
British Airways <BAY.L> fell 3.2 percent, even as it reported its first profit in two years, with traders citing profit-taking after a strong run. [
]Norwegian oil services company Petroleum-Geo Services <PGS.OL> rose 2.8 percent after reporting slightly above-forecast third-quarter core earnings. It said activity in the seismic market was picking up.
Spanish bank Popular <POP.MC> rose 2.2 percent after it reported nine-month net profit ahead of analyst expectations. [
]A U.S. government report, due at 1230 GMT, is expected to show gross domestic product expanded at a 2.0 percent annual rate as consumer spending accelerated and the trade deficit narrowed, compared with a 1.7 percent pace in the second quarter, according to a Reuters survey. (Editing by Karen Foster)