Barrick Gold Corp. has acquired an 11 percent stake in Northwest Territories diamond explorer Diamondex Resources Ltd., Canada's biggest gold producer said May. 18.

Barrick said it acquired 7.55 million units of Diamondex for 90 cents cash each in a private placement, a deal worth an estimated $6.8 million.

Each unit was made up of a common share and a purchase warrant that gives the company th...