** Australian gold shares .AXGD up 4%, set for their strongest session since January 23, if current trend holds
** Gold sub-index snaps a two-day losing streak
** Gold rebounded on Friday on a slightly weaker dollar and lingering concerns over U.S.-Iran talks in Oman GOL/
** Shares of Resolute Mining RSG.AX and Predictive Discovery PDI.AX up 9.9% and 8.4%, respectively; among top gainers in the sub-index
** YTD, sub-index up 5.3%, including the day's move
(Reporting by Sherin Sunny in Bengaluru)
((Sherin.Sunny@thomsonreuters.com))