Dioro Exploration's defence against Avoca Resources' hostile takeover bid has collapsed after its white knight, Northgate Minerals Corporation, terminated talks over the proposed acquisition of Dioro's stake in a key gold asset.

Dioro Exploration's defence against Avoca Resources' hostile takeover bid has collapsed after its white knight, Northgate Minerals Corporation, terminated talks over the proposed acquisition of Dioro's stake in a key gold asset.