* Australia approves Eldorado buy-out of Sino Gold
* Sino Gold listed in Australia but its assets in China (Adds background, valuation)
SYDNEY, Oct 5 (Reuters) - Australia has given
foreign-investment approval for Eldorado Gold Corp's
The Canadian firm's offer, announced in August, is worth A$6.73 a share based on Eldorado's last trade, or a 2.7 percent premium to Sino Gold's close last Friday.
The Canadian group already owns 19.8 percent of Sino Gold
after buying Gold Fields'