(Adds Resource Base, comments) 
    SYDNEY, Nov 23 (Reuters) - Australian shares were little 
changed on Friday, though persistent credit worries saw major 
banks decline for a fourth straight session, while blood 
products group CSL Ltd <CSL.AX> extended gains on a broker 
upgrade. 
    The benchmark S&P/ASX 200 index <.AXJO> edged down 3.5 
points to 6,330.8 by 0036 GMT, after dropping a total of 3.1 
percent in the previous three sessions. The index is on track is 
post its sixth straight weekly loss. 
    New Zealand's benchmark NZX-50 index <.NZ50> nudged down 0.1 
percent, or 2.95 points, to 4,051.27. The top stock, Telecom 
Corp of New Zealand Ltd <TEL.NZ>, was up 1.2 percent at NZ$4.25. 
    STOCKS ON THE MOVE 
    * Resource Base Ltd <RBX.AX> fell on its trading debut, 
declining as much as 15 percent below its issue price of A$0.20. 
    Shares in the gold exploration and production company opened 
at A$0.195 before drifting lower to trade at A$0.17 by 0035 GMT. 
    * Worries about further fallout from the U.S. subprime 
crisis pushed banking stocks lower for the fourth consecutive 
session. 
    National Australia Bank Ltd <NAB.AX> fell 0.6 percent to 
A$40.25 and Commonwealth Bank of Australia Ltd <CBA.AX> lost 0.5 
percent to A$57.60. 
    Australia and New Zealand Banking Group Ltd <ANZ.AX> eased 
0.1 percent to A$27.53 while Westpac Banking Corp <WBC.AX> fell 
1.5 percent to A$26.85. 
    St George Bank <SGB.AX>, which traded ex-dividend on Friday, 
fell 3.1 percent to A$34.29. 
    2354 GMT 
    * Major mining firms fell following a mixed performance in 
base metals prices in London, with nickel and lead prices 
slipping while copper bounced off an eight-month low 
[ID:nL22434274]. 
    BHP Billiton Ltd <BHP.AX>, the world's top miner and 
Australia's top oil and gas producer, fell 0.6 percent to 
A$40.20, while its main rival, Rio Tinto Ltd <RIO.AX>, slipped 
0.2 percent to A$128.50. 
    2351 GMT 
    * CSL, the world's top maker of plasma products, rose 2.8 
percent to A$33.15, adding to a 3.2 percent gain in the previous 
session. 
    ABN AMRO on Thursday raised its rating on CSL to buy from 
hold with a price target of A$34.50, citing recent weakness in 
its share price. 
    2350 GMT 
    * Riversdale Mining Ltd <RIV.AX> dropped as much as 8 
percent to A$9.40 after it announced a share placement of 25.3 
million shares at a discounted A$9.30 each. It last traded down 
4.9 percent at A$9.70. 
    2343 GMT 
 ($1=A$1.15) 
 ($1=NZ$1.33) 
 (Reporting by Geraldine Chua) 
 (([email protected]; +612 9373 1818; Reuters 
Messaging:[email protected])) 
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