** Shares of Perseus Mining PRU.AX rise as much as 5.1% to A$3.710, posting their biggest intraday pct gain since June 3
** Stock hits its highest level since June 18
** Gold explorer reports positive results from drilling at Nyanzaga project in north-western Tanzania, which have potential to extend the life of mine
** Results reinforce confidence in co's ability to expand Nyanzaga's mineral resources and reserves and as a result, potentially extend the life of the mine - CEO Jeff Quartermaine
** Stock up 35.7% YTD, including day's move
(Reporting by Ananya Verma in Bengaluru)
((ananya.verma@thomsonreuters.com;))