MEXICO CITY, June 30 (Reuters) -
* Shares in Mexican miner Penoles rose more than 6 percent on Thursday as investors turned to gold as a bulwark against risk in the wake of Brexit.
* The precious metal is set for its best month since February after the vote.
* Gains in metals prices benefited Penoles, a miner and metals processor which runs the world's largest primary silver producer, Fresnillo.
* Penoles shares were up 6.11 percent at 428.69 pesos in afternoon trading, while shares of miner Grupo Mexico rose 1.62 percent to 42.14 pesos. (Reporting by Natalie Schachar)