* FTSEurofirst 300 closes down 2 percent
* Financials slump despite AIG bailout
* HBOS slides further despite takeover bid from Lloyds
By Brian Gorman
LONDON, Sept 17 (Reuters) - European shares tumbled for a third straight day on Wednesday as investors dumped financials, worried that a credit crisis could claim more victims after the failure of Lehman Brothers <LEH.P> and the bailout of insurer AIG <AIG.N>.
The FTSEurofirst 300 <
> index of top European shares fell 2 percent to 1,070.10 points, the lowest closing level since May 2005. The benchmark is down more than 8 percent this week and on is track for its worst week in more than six years. The index has lost 29 percent this year.Banks took the most points off the index, with HSBC <HSBA.L>, Royal Bank of Scotland <RBS.L> and Banco Santander <SAN.MC> falling by 4.6-10.4 percent.
British lender HBOS <HBOS.L> slipped 19 percent despite saying that it was in advanced talks to be bought by rival Lloyds TSB <LLOY.L>. HBOS has now lost more than 47 percent of its value in the last three days on worries about funding.
"It's been another volatile day," said Darren Winder, head of macro and strategy research at Cazenove.
"There's very little confidence in financial companies, and it's likely to stay that way for a while. Investors can't identify a strategy that will work."
The credit crisis continued to hit financial institutions, with Wall Street firms Morgan Stanley <MS.N> and Goldman Sachs <GS.N> plummeting.
Tuesday's $85 billion rescue of insurer American International Group <AIG.N> by the U.S. Federal Reserve did little to calm nerves around the world.
The cost of borrowing overnight dollars spiked above 10 percent, betraying a deep lack of trust in the inter-bank lending market in Europe. [
]Miners suffered because of a broader market sell-off and a decline in key base metals prices, although gold prices rose as investors sought a safe haven.
BHP Billiton <BLT.L>, Anglo American <AAL.L>, Vedanta Resources <VED.L>, Kazakhmys <KAZ.L>, Xstrata <XTA.L>, Antofagasta <ANTO.L> and Rio Tinto <RIO.L> fell between 1 and 11 percent. Across Europe the FTSE 100 <
> index fell 2.3 percent, the German DAX < > slipped 1.8 percent and the French CAC 40 <FCHI> dropped 2.1 percent.
BARCLAYS STANDS OUT
British bank Barclays <BARC.L>, which is buying Lehman's U.S broker dealer business, rose 3.2 percent to stand out in a sea of red.
Elsewhere macroeconomic signals were also gloomy.
German Chancellor Angela Merkel said Europe's largest economy will not escape unscathed even though the impact of the global market turmoil has been moderate so far.
And the number of Britons claiming unemployment benefit rose for a seventh consecutive month in August and by its biggest amount since December 1992.
Energy stocks were mixed as the crude oil price <CLc1> pared gains, up 1.6 percent at $92.60 a barrel late in the afternoon. Shares in Repsol <REP.MC> were up 0.6 percent, Royal Dutch Shell <RDSa.L> rose 0.7 percent and Statoil Hydro <STL.OL> gained 1.2 percent. But BP <BP.L> fell 0.8 percent.
But analysts said the focus continued to be squarely on financials as uncertainty prevailed after the folding of Lehman and the travails of AIG.
"There's no transparency, We don't know about funding, the cost of it and the size of the problem," said Cazenove's Winder. (Editing by David Cowell)