** Shares of Australia's Red Metal RDM.AX rise as much as
30.2% to A$0.125, biggest intraday gain since Aug. 24
** Stock at its highest level since Aug. 28
** Mineral explorer says outstanding leach results received
from initial metallurgical testing at co's Sybella discovery in
Northeastern (NE) Australia
** Leaching tests provides good overview of mobility of
heavy metals
** Adds perceives results as source of rare earth oxide
minerals with potential for highly competitive capital
** 3.6 mln shares change hands as of 0218 GMT, vs 30-day
average volume of 318,604 shares
** RDM stock up 2.1% this year as of last close
(Reporting by Roshan Thomas in Bengaluru)
((Roshan.Thomas@thomsonreuters.com))