** Shares of mineral explorer Okapi Resources OKR.AX
advance as much as 13.5% to A$0.295, their highest since May 5
** Co receives vanadium assay results from the rock chip
sample programme at its Rattler uranium project in the La Sal
Mining district, Utah urn:newsml:reuters.com:*:nASX2GwMJD
** Says rock samples from programme returned vanadium values
of up to 12.5%
** Shares mark their biggest intraday pct gain since May 13
** Stock down 24.6% this year, as of last close, vs a 3.1%
decrease in the benchmark S&P/ASX 200 index .AXJO
(Reporting by Roushni Nair in Bengaluru)
((Roushni.Nair@thomsonreuters.com;))