** Shares of mineral explorer Ragusa Minerals RAS.AX rise
as much as 31% to A$0.190
** Shares set for their best day since Nov. 30, if gains
hold
** Co says initial assay results from its Burracoppin
Project in Western Australia returned high-grade rare earth
oxide mineralisation
** Adds results received to date also indicate that
Burracoppin Project contains "exceptionally" high-grade alumina
** As of last close, stock up 83.5% this year
(Reporting by Himanshi Akhand in Bengaluru)
((Himanshi.Akhand@thomsonreuters.com;))