** Shares of Astro Resources NL ARO.AX rise as much as
33.3% to A$0.004
** Stock set for best day since July 4, if gains hold
** ARO says it has fully executed the definitive transaction
documents with mineral explorer Greenvale Mining Ltd GRV.AX
** Says will acquire 80% interest in Greenvale's unit, Knox
Resources Pty Ltd, which owns the Georgina Basin iron-oxide
copper-gold project in the Northern Territory urn:newsml:reuters.com:*:nGLF6n65Xm
** Stock has fallen 40% this year, as of last close
(Reporting By Udbhav Krishna P in Bengaluru)
((UdbhavKrishna.P@Thomsonreuters.com))