* FTSEurofirst 300 down 0.4 pct after sharp two-week rise
* Reports on capital reform, stress tests pressure banks
* Tax fears hit miners as Australia's Gillard secures office
By Harpreet Bhal
LONDON, Sept 7 (Reuters) - European shares fell on Tuesday, stubbing out a two-week rally, with banks hit by concerns over the sector's health and the impact of capital reform, while miners dropped on renewed jitters over Australia's tax plan.
The pan-European FTSEurofirst 300 <
> index of top shares closed 0.4 percent lower at 1,061.79 points, after gaining almost 7 percent over the past two weeks.The Euro STOXX 50 <
>, the euro zone's blue chip index, was down 1 percent at 2,727.16 points, dropping back below its 50 percent Fibonacci retracement of a fall from an April high to a May low.Banks were pressured by a report in the Wall Street Journal, which said recent stress tests in the European banking sector understated some lenders' holdings of potentially risky government debt.
Among the fallers, Societe Generale <SOGN.PA>, Dexia <DEXI.BR> and Deutsche Bank <DBKGn.DE> fell 1.7 to 3.9 percent.
Adding to the concerns, Germany's Die Zeit newspaper, quoting a draft proposal from the Basel committee, reported that global banks would be required to hold Tier 1 capital of 9 percent, including a 3 percent so-called "conservation buffer". [
]The Basel committee, in charge of drawing up global banking rules, agreed tougher new capital rules on Tuesday but will keep investors on tenterhooks until Sunday when formal endorsement is expected. [
]"Nobody really knows yet how these reforms will affect the banking sector and that is making the market quite nervous," said Oliver Roth, head trader at Close Brothers Seydler Bank in Frankfurt.
Barclays <BARC.L> fell 2.7 percent. The bank said Bob Diamond, head of its investment and wealth management business, would succeed John Varley as group chief executive.
In the mining sector, Xstrata <.XTA.L>, BHP Billiton <BLT.L> and Rio Tinto <.RIO.L> were off 1.4 to 1.8 percent, after Australian Prime Minister Julia Gillard secured a second term in office, with her government vowing to press ahead with a new mining tax.
MACRO HEADWINDS
Investors were also rattled by poor macroeconomic data from Germany, and a weak outlook for U.S. employment.
German manufacturing orders in July unexpectedly fell 2.2 percent, their steepest rate in more than a year, dragged by below-average volume in big orders. [
]In the United States, the Conference Board's Employment Trend's Index declined in August, signaling that employment growth may continue to slow in the coming months. [
]"There still is some doubt about economic growth in the second half," said Koen De Leus, economist at KBC Securities. "We have just had a relief rally and investors are waiting to see what direction the economy is going to take in the second half."
Bucking the weak trend, Invensys <ISYS.L> climbed 7.4 percent, with traders citing a newspaper report that the engineering group is a takeover target. An Invensys spokesman declined to comment.
Nokia <NOK1V.HE> added 4.5 percent, and touched its highest level in 12 weeks, after Morgan Stanley upgraded its recommendation on the stock to "overweight" and raised earnings forecasts for the world's top cellphone maker.
Across Europe, Britain's FTSE 100 <
>, Germany's DAX < > and France's CAC < > were 0.6 to 1.1 percent lower. (Additional reporting by Joanne Frearson; Editing by Sharon Lindores)