** Shares of Australia's Centaurus Metals CTM.AX rise as much as 9.4% to A$0.58
** Stock hits its biggest intraday pct gain since March 10
** The mineral explorer says it entered an agreement with Glencore GLEN.L
** Says agreement for supply of nickel concentrate from co's Jaguar Nickel Sulphide Project in Brazil
** Adds that estimated value of agreement, at current nickel prices, exceeds $450 million
** Despite moves, CTM stock down 8.6% YTD
(Reporting by Aamir Sheik Khalid in Bengaluru)
((Aamir.SheikKhalid@thomsonreuters.com))