** Legacy Minerals rises as much as 4.7% to A$0.225, the highest since Oct. 4
** Gold explorer says its exploration partner Earth AI has intercepted multiple platinum group elements, nickel and copper mineralisations in New South Wales' Fontenoy Project
** Signs JV with Earth AI for A$4.5 mln ($3 mln) investment over 4 years for 80% stake in the project
** Stock up 87.5%
($1 = A$1.4941)
(Reporting by Kumar Tanishk in Bengaluru)
((Tanishk.Kumar@thomsonreuters.com;))